Question

Stacy needs to find the circumference of a circle with a diameter of 15 inches. She needs a pretty accurate answer, so she uses a calculator. Which answer is reasonable?

45.143672 in
47.123889 in
49.068423 in
50.714805 in

Answer 1

c = pi * d
c = pi * 15
c = 47.1238898 in

Answer 2

Your answer would be 47.123889.