Find the volume of a cone with a base area of 16 pi squared feet and a height of 9 ft. ???

Question

wolf1728 · Answer

When you say the base area is 16 pi squared is that 16 * PI * PI?
( or 157.9136704174)

anonymous · Answer

Yes

wolf1728 · Answer

Just curious because area of a circel = PI * r² and it seems weird getting PI squared as an answer.

wolf1728 · Answer

Maybe it is 16 PI square feet.  That makes it easier to understand.

anonymous · Answer

haha yes sorry, I messed up

wolf1728 · Answer

area = PI * r²
16 PI = PI * r²
r = 4

anonymous · Answer

how did you figure that out?

wolf1728 · Answer

The area is 16 PI which has to equal PI r²
Dividing both sides by PI makes it 16 = r²
r = sq root (16) which is 4

anonymous · Answer

Ok, I got it know Thanks!!!

wolf1728 · Answer

Now for the volume, it equals 
(PI * r² * h) / 3
=(PI * 16 * 9) / 3
=452.39 / 3
= 150.80 cubic feet

anonymous · Answer

thanks!(: