Question

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

Answer 1

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

Answer 2

Yes

Answer 3

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

Answer 4

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

Answer 5

haha yes sorry, I messed up

Answer 6

area = PI * r²
16 PI = PI * r²
r = 4

Answer 7

how did you figure that out?

Answer 8

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

Answer 9

Ok, I got it know Thanks!!!

Answer 10

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

Answer 11

thanks!(: