Question

how do u find the area and circumfrance of a circle with the diameter of 18 inches. Express your answer in pie?

Answer 1

A=\[\pi\]r(squared)(times2)
C=2\[\pi\]r
r stands for radius so the radius would be half of the diameter 18=9 and now you just solve it

Answer 2

C = (d)pi = 18pi

A = C/2 = 18pi/2 = 9pi

Answer 3

make that A = Cr/2 = 9(9)pi/2 = 81pi/2

Answer 4

forget it...lol...i gotta take a nap :)