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

Given,

distance across the circular mouth of a volcano running through its center is 75 yards

Diameter d= 2r=75 yards

r= 75/2

the distance around its mouth = Perimeter = 2 * pi * r = 2*22/7 * 75/2 = 235. 5 yards

Answer option C