Question

Estimate the diameter of a circle with a circumference of 80 feet.

50.96 ft


12.74 ft


25.48 ft


40 ft

Answer 1

Using the circumference of the circle formula..

C = πd

Given that C = 80..

80 = πd

d = 80/π ft

≈ 25.4 ft

Answer 2

Circumference = π * diameter

diameter = Circumference / π

= 80 / π

= 25.48 feet