Question

An outdoor cylindrical fire pit has an interior radius of 28 in. Filling the fire pit with fireglass, will require 91 pounds of glass per cubic foot. How many will be needed to fill the pit to a depth of 3 inch? (Round to the nearest pound as needed.)

Answer 1

The Solution:

By formula, the volume of the cylindrical pit is given as below:

`\begin{gathered} V=\pi r^2h \\ \text{ Where} \\ V=\text{volume of the pit} \\ r=\text{ radius of the pit=28 inches} \\ h=\text{ depth of the pit=3 inches} \end{gathered}`

Converting inches to feet:

Recall that