find the diameter of a circle whose area is 380.13m^2.

Question

kahn academy or math way

Answer 1

22 m would be your diameter.

This can be determined using the following two functions where A is area in squared units and d is the diameter of the circle.

A = π•r² solve for r(adius)

380.13 / π = 121 = r²

√121 = r

11 = r

d = 2r solve for d(iameter)

d = 2 (11)

d = 22