Find the diameter of a circle whose area is 254.34 square inches.

Area=pi times radius^2

radius=1/2diameter

2radius=diameter

solver

254.34=pi times r^2

aprox pi to 3.14

256.34=3.14 times r^2

divide both sides by 3.14

81=r^2

square root both sides

9=r

subsitue

2r=d

2 (9) = d

18=d

the diameter is 18 inches