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The volume of a cone with a radius of 7 cm is [tex]147 \pi[/tex] cubic centimeters. Which expression can be used to find [tex]h[/tex], the height of the cone?

A. [tex]147 \pi = \frac{1}{3}(7)(h)^2[/tex]

B. [tex]147 \pi = \frac{1}{3} \pi \left(7^2\right)(h)[/tex]

C. [tex]147 \pi = \frac{1}{3} \pi h[/tex]

D. [tex]147 \pi = \frac{1}{3} \pi(7)(h)[/tex]

Answer :

We are given that the volume of a cone is
[tex]$$V = \frac{1}{3}\pi r^2 h,$$[/tex]
where [tex]$r$[/tex] is the radius and [tex]$h$[/tex] is the height.

Given:
- Radius [tex]$r = 7$[/tex] cm,
- Volume [tex]$V = 147\pi$[/tex] cubic centimeters.

Substitute [tex]$r = 7$[/tex] into the volume formula:
[tex]$$147\pi = \frac{1}{3}\pi (7^2)h.$$[/tex]

This is the expression that can be used to find [tex]$h$[/tex]. Therefore, the correct choice is

[tex]$$147\pi=\frac{1}{3} \pi\left(7^2\right)(h).$$[/tex]

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