Question

What is the circumference of a circle with a radius of 9.7 inches?

Use 3.14 for pi.

Enter your answer as a decimal in the box.

Answer 1

60.916

(rounded to the two nearest decimals = 60.92, and to the first decimal = 60.9)

Explanation:

Circumference formula: 2πr

π being pi and r being radius

Fill in your variables: 2(3.14)(9.7) or 2 x 3.14 x 9.7

use your calculator or simply solve it and you end up with 60.916.

I hope this helped :)

Answer 2

Answer: 60.916 inches

==================================================

Work Shown:

C = 2*pi*r

C = 2*3.14*9.7

C = 60.916

This value is approximate since pi = 3.14 is approximate. Use more decimal digits in pi to get a more accurate circumference. The circumference is the distance around the circle, aka the perimeter.