Question

A circle has a radius of 20 cm. = 3.14

What is its perimeter (to the nearest tenth)? ____ cm

What is its area (to the nearest tenth)?____ cm2

Answer 1

125.6

1,256

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Answer 2

If a circle's radius is 20 and Pi is taken to be 3.14, then the perimeter is 125.7 cm, rounded to the nearest tenth, because the formula for it is 2 times radius times Pi. The area is 1256.6 cm2 rounded to the nearest tenth because the formula Pi times the squared radius.