Piramida je jedno od najvažnijih geometrijskih tela koje ćeš često... Show more
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Updated Mar 25, 2026
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Sve o Piramidama: Površina, Zapremina i Elementi
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Osnove piramide - elementi koje moraš da znaš
Svaka piramida se sastoji od nekoliko ključnih delova koje moraš da prepoznaš odmah. Baza (B) je mnogougao na dnu koji može biti trougao, četvorougao ili bilo koji drugi pravilan oblik. Vrh (T) je tačka gde se spajaju sve bočne strane.
Osnovna ivica (a) je stranica baze, dok je bočna ivica (s) linija koja spaja vrh sa uglom baze. Kod pravilnih piramida, sve bočne ivice su jednake dužine.
Najvažnije su ti visina piramide (H) - to je najkraće rastojanje od vrha do baze, i apotema (h) - visina bočne strane. Pazi da ne mešaš ove dve!
💡 Zapamti: Visina H ide u centar baze, apotema h je visina bočnog trougla. Nisu isto!
Pravilne piramide - formule za površinu i zapreminu
U devetom razredu radiš uglavnom sa pravilnim piramidama. Kod njih je baza pravilan mnogougao (kvadrat, jednakostranični trougao, pravilan šestougao), a visina pada tačno u centar baze.
Za površinu koristi formulu P = B + M, gde je B površina baze, a M površina omotača (zbir svih bočnih strana). Površinu baze računaš prema obliku mnogougla.
Zapremina se uvek računa kao V = ⅓ × B × H - jedna trećina proizvoda površine baze i visine. Ovo je glavna razlika u odnosu na prizmu!
💡 Savršen trik: Zapremina piramide je uvek trećina zapremine prizme iste baze i visine.
Pitagorina teorema - tvoj najbolji prijatelj
Pitagorina teorema je ključ za rešavanje svih težih zadataka sa piramidama. Postoje tri karakteristična pravougla trougla koje moraš da prepoznaš.
Prvi trougao povezuje h² = H² + rᵤ² (visinu piramide, apotemu i poluprečnik upisane kružnice). Drugi daje vezu s² = H² + R₀² (visinu, bočnu ivicu i poluprečnik opisane kružnice).
Treći trougao pokazuje s² = h² + ² - povezuje apotemu, bočnu ivicu i polovinu osnovne ivice. Za najčešće baze pamti: kvadrat ima B = a², rᵤ = a/2; jednakostranični trougao B = a²√3/4, rᵤ = a√3/6.
💡 Zlatno pravilo: Uvek nacrtaj skicu i označi elemente - tako ćeš lakše prepoznati koji trougao trebaš!
Rešeni primer - četvorostrana piramida
Imaš pravilnu četvorostranu piramidu sa osnovnom ivicom a = 10 cm i visinom H = 12 cm. Treba da nađeš površinu i zapreminu.
Počni sa bazom: B = a² = 10² = 100 cm². Zapremina je laka jer imaš H: V = ⅓ × B × H = ⅓ × 100 × 12 = 400 cm³.
Za površinu ti treba omotač, a za to potrebna apotema. Kod kvadrata je rᵤ = a/2 = 5 cm. Pomoću Pitagore: h² = H² + rᵤ² = 144 + 25 = 169, dakle h = 13 cm.
Omotač ima 4 jednaka trougla: M = 4 × (a × h)/2 = 2 × 10 × 13 = 260 cm². Konačna površina: P = B + M = 100 + 260 = 360 cm².
💡 Pro savet: Uvek proveri da li ti trebaju svi elementi pre početka računanja!
Rešeni primer - šestostrana piramida i važni saveti
Pravilna šestostrana piramida sa osnovnom ivicom a = 6 cm i bočnom ivicom s = 10 cm. Cilj je zapremina.
Baza je pravilan šestougao: B = 6 × (a²√3)/4 = 54√3 cm². Za visinu koristiš vezu s² = H² + R₀², gde je za šestougao R₀ = a = 6 cm. Dakle: 100 = H² + 36, pa je H = 8 cm.
Najčešće greške koje praviš: mešanje visine piramide (H) i apoteme (h), zaboravljanje Pitagorine teoreme, nepoznavanje formula za baze.
Ključne formule za kontrolni: P = B + M, V = ⅓BH, tri Pitagorina trougla, i formule za kvadrat, jednakostranični trougao i pravilan šestougao.
💡 Za odličnu ocenu: Nauči napamet formule za poluprečnike - bez njih ne možeš ni da počneš zadatak!
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What is the Knowunity AI companion?
Our AI companion is specifically built for the needs of students. Based on the millions of content pieces we have on the platform we can provide truly meaningful and relevant answers to students. But its not only about answers, the companion is even more about guiding students through their daily learning challenges, with personalised study plans, quizzes or content pieces in the chat and 100% personalisation based on the students skills and developments.
Where can I download the Knowunity app?
You can download the app in the Google Play Store and in the Apple App Store.
Is Knowunity really free of charge?
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
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The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️
Thomas R
iOS user
Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades
Brad T
Android user
Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend
Aubrey
iOS user
Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀
Marco B
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️
Thomas R
iOS user
Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades
Brad T
Android user
Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend
Aubrey
iOS user
Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀
Marco B
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!
Paul T
iOS user
Sve o Piramidama: Površina, Zapremina i Elementi
Piramida je jedno od najvažnijih geometrijskih tela koje ćeš često susretati na testovima. Ovo je poliedar koji ima jednu osnovnu površinu (bazu) i trouglaste bočne strane koje se spajaju u jednoj tački - vrhu piramide.
Osnove piramide - elementi koje moraš da znaš
Svaka piramida se sastoji od nekoliko ključnih delova koje moraš da prepoznaš odmah. Baza (B) je mnogougao na dnu koji može biti trougao, četvorougao ili bilo koji drugi pravilan oblik. Vrh (T) je tačka gde se spajaju sve bočne strane.
Osnovna ivica (a) je stranica baze, dok je bočna ivica (s) linija koja spaja vrh sa uglom baze. Kod pravilnih piramida, sve bočne ivice su jednake dužine.
Najvažnije su ti visina piramide (H) - to je najkraće rastojanje od vrha do baze, i apotema (h) - visina bočne strane. Pazi da ne mešaš ove dve!
💡 Zapamti: Visina H ide u centar baze, apotema h je visina bočnog trougla. Nisu isto!
Sign up to see the contentIt's free!
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Pravilne piramide - formule za površinu i zapreminu
U devetom razredu radiš uglavnom sa pravilnim piramidama. Kod njih je baza pravilan mnogougao (kvadrat, jednakostranični trougao, pravilan šestougao), a visina pada tačno u centar baze.
Za površinu koristi formulu P = B + M, gde je B površina baze, a M površina omotača (zbir svih bočnih strana). Površinu baze računaš prema obliku mnogougla.
Zapremina se uvek računa kao V = ⅓ × B × H - jedna trećina proizvoda površine baze i visine. Ovo je glavna razlika u odnosu na prizmu!
💡 Savršen trik: Zapremina piramide je uvek trećina zapremine prizme iste baze i visine.
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
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Pitagorina teorema - tvoj najbolji prijatelj
Pitagorina teorema je ključ za rešavanje svih težih zadataka sa piramidama. Postoje tri karakteristična pravougla trougla koje moraš da prepoznaš.
Prvi trougao povezuje h² = H² + rᵤ² (visinu piramide, apotemu i poluprečnik upisane kružnice). Drugi daje vezu s² = H² + R₀² (visinu, bočnu ivicu i poluprečnik opisane kružnice).
Treći trougao pokazuje s² = h² + ² - povezuje apotemu, bočnu ivicu i polovinu osnovne ivice. Za najčešće baze pamti: kvadrat ima B = a², rᵤ = a/2; jednakostranični trougao B = a²√3/4, rᵤ = a√3/6.
💡 Zlatno pravilo: Uvek nacrtaj skicu i označi elemente - tako ćeš lakše prepoznati koji trougao trebaš!
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
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Rešeni primer - četvorostrana piramida
Imaš pravilnu četvorostranu piramidu sa osnovnom ivicom a = 10 cm i visinom H = 12 cm. Treba da nađeš površinu i zapreminu.
Počni sa bazom: B = a² = 10² = 100 cm². Zapremina je laka jer imaš H: V = ⅓ × B × H = ⅓ × 100 × 12 = 400 cm³.
Za površinu ti treba omotač, a za to potrebna apotema. Kod kvadrata je rᵤ = a/2 = 5 cm. Pomoću Pitagore: h² = H² + rᵤ² = 144 + 25 = 169, dakle h = 13 cm.
Omotač ima 4 jednaka trougla: M = 4 × (a × h)/2 = 2 × 10 × 13 = 260 cm². Konačna površina: P = B + M = 100 + 260 = 360 cm².
💡 Pro savet: Uvek proveri da li ti trebaju svi elementi pre početka računanja!
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
Rešeni primer - šestostrana piramida i važni saveti
Pravilna šestostrana piramida sa osnovnom ivicom a = 6 cm i bočnom ivicom s = 10 cm. Cilj je zapremina.
Baza je pravilan šestougao: B = 6 × (a²√3)/4 = 54√3 cm². Za visinu koristiš vezu s² = H² + R₀², gde je za šestougao R₀ = a = 6 cm. Dakle: 100 = H² + 36, pa je H = 8 cm.
Najčešće greške koje praviš: mešanje visine piramide (H) i apoteme (h), zaboravljanje Pitagorine teoreme, nepoznavanje formula za baze.
Ključne formule za kontrolni: P = B + M, V = ⅓BH, tri Pitagorina trougla, i formule za kvadrat, jednakostranični trougao i pravilan šestougao.
💡 Za odličnu ocenu: Nauči napamet formule za poluprečnike - bez njih ne možeš ni da počneš zadatak!
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
We thought you’d never ask...
What is the Knowunity AI companion?
Our AI companion is specifically built for the needs of students. Based on the millions of content pieces we have on the platform we can provide truly meaningful and relevant answers to students. But its not only about answers, the companion is even more about guiding students through their daily learning challenges, with personalised study plans, quizzes or content pieces in the chat and 100% personalisation based on the students skills and developments.
Where can I download the Knowunity app?
You can download the app in the Google Play Store and in the Apple App Store.
Is Knowunity really free of charge?
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
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Students love us — and so will you.
4.6/5
App Store
4.7/5
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️
Thomas R
iOS user
Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades
Brad T
Android user
Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend
Aubrey
iOS user
Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀
Marco B
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️
Thomas R
iOS user
Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades
Brad T
Android user
Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend
Aubrey
iOS user
Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀
Marco B
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!
Paul T
iOS user