College

The volume of a cylinder is [tex]$126 \pi \, \text{ft}^3$[/tex], and the radius of the circular base is 6 ft. What is the height of the cylinder?

[tex]\begin{array}{l}
V = B \cdot h \\
126 \pi = (6)^2 \pi \cdot h \\
126 \pi = 36 \pi \cdot h \\
126 = 36 \cdot h
\end{array}[/tex]

Solve for [tex]h[/tex].

Answer :

To find the height of the cylinder, we can use the formula for the volume of a cylinder, which is given by:

[tex]\[ V = \pi r^2 h \][/tex]

where:
- [tex]\( V \)[/tex] is the volume of the cylinder,
- [tex]\( r \)[/tex] is the radius of the base,
- [tex]\( h \)[/tex] is the height of the cylinder.

We're given that the volume of the cylinder is [tex]\( 126 \pi \)[/tex] cubic feet and the radius of the base is 6 feet. We need to find the height [tex]\( h \)[/tex].

Let's break it down step-by-step:

1. Substitute the known values into the volume formula:

[tex]\[
126 \pi = \pi \times (6)^2 \times h
\][/tex]

2. Simplify the equation:

Calculate [tex]\( (6)^2 \)[/tex] to find the area of the base:

[tex]\[
36 \pi
\][/tex]

Substitute it back into the equation:

[tex]\[
126 \pi = 36 \pi \times h
\][/tex]

3. Divide both sides by [tex]\( 36 \pi \)[/tex] to solve for [tex]\( h \)[/tex]:

[tex]\[
h = \frac{126 \pi}{36 \pi}
\][/tex]

The [tex]\( \pi \)[/tex] cancels out:

[tex]\[
h = \frac{126}{36}
\][/tex]

4. Calculate the division:

[tex]\[
h = 3.5
\][/tex]

The height of the cylinder is 3.5 feet.