Question

The radius of a circle is 65 centimeters.

Enter the circumference of the circle, in centimeters. Round your answer to the nearest hundredth.

Answer 1

Answer: C=408.41 centimeters

Explanation:

2 times pi times 65

130 pi

Approximately 408.41

Answer 2

circumference = 2 x pi x r

r = 65 cm

so C ≈ 2 x 3,14 x 65 ≈ 408,20