Question

Find the radius of a circle with a circumference of 36 Inches

Answer 1

r = 18/pi

or approximately 5.7325 inches

Explanation:

The circumference is given by

C = 2*pi*r

36 = 2*pi*r

Divide each side by 2 pi

36/(2pi) = r

18/pi = r

Letting pi = 3.14

18/3.14

5.732484076 = r