The opening of a tunnel that travels through a mountainside can be modeled by y = - \frac {2}{15} (x - 15)(x + 15)y=−152(x−15)(x+15) , where x and y are measured in feet. The x-axis represents the ground. a. Find the width of the tunnel at ground level.
b. How tall is the tunnel?

volume = pi ^ radius^2 * height

Step-by-step explanation:

To find the volume of a cylinder, you multiply the area of the base by the height of the cylinder.

First, measure of obtain the diameter or the radius of the base.

Then measure or obtain the height of the cylinder.

If you have the diameter of the base, divide it by 2 to obtain the radius of the base.

The area of the base is pi * radius^2.

Then multiply the area of the base by the height.

Volume = pi * r^2 * height