Question

Find the missing measure for a right circular cone given the following information.

Find V if r = 2 and L.A. = 12pi

Answer 1

so \[12 \pi = \pi r \sqrt{h^2 + r^2}\]and\[V=\frac{ 1 }{ 3 }\pi r^2 h\]right?

Answer 2

yes

Answer 3

and r = 2?

Answer 4

yea

Answer 5

so you can solve the first equation for h, correct?

then you can use that value of h with r = 2 in the second equation to solve for the volume...

Answer 6

but you need the slant height as well to solve this

Answer 7

the slant height is \(\sqrt{h^2+r^2}\) where h is the vertical height and r is the radius.

Answer 8

oh okay i get it now thanks :)

Answer 9

you're welcome!