Question

The circumference of a circular painting is 53.38 feet. What is the radius of the painting? Use 3.14 for pi and do not round your answer.

Answer 1

The circumference or perimeter of the circle has the formula 2*pi*r, where r is the radius of the circle. This could then be easily calculated:

C = 2*pi*r
53.38 = 2*3.14*r
53.38 = 6.28r
r = 53.38/6.28
r = 8.5 ft

Thus, the radius of the circle has a length of 8.5 feet.