Question

Find the circumference of a circle that has an area of 452.16 square meters. (Use 3.1416 as the value of π.)

Answer 1

452.16 = 3.1416 r^2
r^2 = 452.16  /  3.1416
r^2 = 143.93
r = 11.997

C = 2 (3.1416) (12) =75.38 m