Question

v = \frac{1}{3}\pi r^{2}h
the formula gives the volume v of a right circular cone with radius r and height h. what is the volume, in cubic inches, of a right circular cone with a radius of 12 inches and a height of 2 inches?
choose 1 answer:
a 96\pi
b 72\pi
c 24\pi
d 8\pi

Explanation:

Step1: Substitute values

$r = 12$, $h = 2$ into $V=\frac{1}{3}\pi r^{2}h$
$V=\frac{1}{3}\pi\times12^{2}\times2$

Step2: Calculate result

$V=\frac{1}{3}\pi\times144\times 2=96\pi$

Answer:

A. $96\pi$