The distance across the circular mouth of a volcano running

The distance across the circular mouth of a volcano running through its center is 75 yards. What is the distance around its mouth?

A. 145.5 yd

B. 215.5 yd

C. 235.5 yd

D. 315.5 yd

Solution

Distance across the circular mouth through center = D = 2r = 75 yards

Distance around its mouth = Circumference of the circle = 2 * pi * r

=> pi * 75

=> 3.14 * 75

=> 235.5

Hence the correct answer is Option C