Question

A circle has an area of 497 square inches. What is the circumference of the circle?

A. 175 inches
B. 14 inches
C. 3.5 inches
D. 7 inches

Answer 1

easy peasy

Explanation:

we have, area = 497 sq. units

that is, (pi) (radius)^2=497

=> (22/7) x r^2 = 497

=> r^2 = 158.13

=> r = √158.13

=> r = 12.57

now we also have radius, soooo

=> circumference = 2 (pi) (radius)

=> (2) (22/7) (12.57)

=> 79.01 inches