what is the exact area of a circle with a diameter of 15 inches?

Question

Damon · Accepted Answer

radius = 15/2 area = pi r^2 = pi (225/4)

jenna · Answer

so its 225pi sq. in?

bobpursley · Answer

exact? One cannot write down exactly irrational numbers, such as PI. The exact answer is 225/4 * PI

Damon · Answer

pi r^2 = pi D^2/4 = area of circle

Lola Martinez · Answer

you guys are all wrong