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Finding the Circumference and Area of a Circle Revision Note
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Circumference ~» The perimeter of thr circle / distance around the circle Radius ~ The line that starts from the edge of a circle to its midpoint/ middle of circle. Diameter ~ The line that starts from an edge of the circle ending to another edge. Circumference с Radius Diameter d Finding the Circumference (with answers) 1. diameter ~ 25cm Diameter ~ 25 PI (3.14) x 25 = 78.5 (could ask you to give answer in cm² so 78.5cm²) 2. diameter 34 cm Diameter 34 Pi (3.14) × 34= 106.76 X (Round to 1 d.p.= 106.8) Finding the diameter of a circle 1. 35cm Diameter ~» Pi (3.14) × d 3.14 x 35 = 109.9 (Could ask to give answer to 1 d.p. in cm² so 109.9cm²) 2. 20 cm Diameter ~ 20cm 20 × Pi (3.14) = 62.8 62.8cm² (to 1 d.p.) Finding the Radius (Area) of a Circle 1. 15cm Radius 15cm To find the Radius of the circle= Pi (3.14) x 15² = 706.5 Answer ~ 706.5cm² (to 1 d.p.) 2. 7cm Radius ~ 7cm Pi (3.14) × 7² = 153.9 Answer ~ 153.9cm² (to 1 d.p.)
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Finding the Circumference and Area of a Circle Revision Note
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This revision note is about finding the circumference and area of a circle.
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Finding the Circumference and Area of a Circle Revision Note
Comments (1)
This revision note is about finding the circumference and area of a circle.
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Circumference ~» The perimeter of thr circle / distance around the circle Radius ~ The line that starts from the edge of a circle to its midpoint/ middle of circle. Diameter ~ The line that starts from an edge of the circle ending to another edge. Circumference с Radius Diameter d Finding the Circumference (with answers) 1. diameter ~ 25cm Diameter ~ 25 PI (3.14) x 25 = 78.5 (could ask you to give answer in cm² so 78.5cm²) 2. diameter 34 cm Diameter 34 Pi (3.14) × 34= 106.76 X (Round to 1 d.p.= 106.8) Finding the diameter of a circle 1. 35cm Diameter ~» Pi (3.14) × d 3.14 x 35 = 109.9 (Could ask to give answer to 1 d.p. in cm² so 109.9cm²) 2. 20 cm Diameter ~ 20cm 20 × Pi (3.14) = 62.8 62.8cm² (to 1 d.p.) Finding the Radius (Area) of a Circle 1. 15cm Radius 15cm To find the Radius of the circle= Pi (3.14) x 15² = 706.5 Answer ~ 706.5cm² (to 1 d.p.) 2. 7cm Radius ~ 7cm Pi (3.14) × 7² = 153.9 Answer ~ 153.9cm² (to 1 d.p.)
Circumference ~» The perimeter of thr circle / distance around the circle Radius ~ The line that starts from the edge of a circle to its midpoint/ middle of circle. Diameter ~ The line that starts from an edge of the circle ending to another edge. Circumference с Radius Diameter d Finding the Circumference (with answers) 1. diameter ~ 25cm Diameter ~ 25 PI (3.14) x 25 = 78.5 (could ask you to give answer in cm² so 78.5cm²) 2. diameter 34 cm Diameter 34 Pi (3.14) × 34= 106.76 X (Round to 1 d.p.= 106.8) Finding the diameter of a circle 1. 35cm Diameter ~» Pi (3.14) × d 3.14 x 35 = 109.9 (Could ask to give answer to 1 d.p. in cm² so 109.9cm²) 2. 20 cm Diameter ~ 20cm 20 × Pi (3.14) = 62.8 62.8cm² (to 1 d.p.) Finding the Radius (Area) of a Circle 1. 15cm Radius 15cm To find the Radius of the circle= Pi (3.14) x 15² = 706.5 Answer ~ 706.5cm² (to 1 d.p.) 2. 7cm Radius ~ 7cm Pi (3.14) × 7² = 153.9 Answer ~ 153.9cm² (to 1 d.p.)
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Knowunity is the # 1 ranked education app in five European countries
Knowunity was a featured story by Apple and has consistently topped the app store charts within the education category in Germany, Italy, Poland, Switzerland and United Kingdom. Join Knowunity today and help millions of students around the world.
Still not sure? Look at what your fellow peers are saying...
iOS User
I love this app so much [...] I recommend Knowunity to everyone!!! I went from a C to an A with it :D
Stefan S, iOS User
The application is very simple and well designed. So far I have found what I was looking for :D
SuSSan, iOS User