Question

What is the base area of the cone?

Answer 1

Answer:

Step-by-step explanation:

In order to find the area of the circle base, we need the radius, and we don't have it. We'll use the volume to find the radius, as follows:

$V=\frac{1}{3}\pi r^2h$ and fill in the givens:

$75=\frac{1}{3}\pi r^2(5)$ and solve that for r;

$r=\sqrt{\frac{3(75)}{5\pi} }$ so

r = 3.784698783 and plug that in for the radius to find the area of the circle base:

$A=\pi r^2$ so

$A=\pi (3.784698783)^2$ gives you that

A = 45 meters squared, exactly. No decimal.