Question

Which of the following figures has a circumference that is closest to 121 inches?

A
a circle with a diameter of 38.5 inches

B
a circle with a diameter of 19.3 inches

C
a circle with a radius of 38.5 inches

D
a circle with a radius of 6.2 inches

Answer 1

A.

Explanation:

C = 2πr = πd

A. C = π(38.5 in.) = 120.95 in.

First guess: Answer: A.