The volume of this cone is 3,183.96 cubic yards. What is the height of this cone?

Use ​𝜋 ≈ 3.14 and round your answer to the nearest hundredth.

13 yd

h ≈
yards

1 answer

To find the height of the cone given its volume, we can use the formula for the volume of a cone:

\[ V = \frac{1}{3} \pi r^2 h \]

Where:

  • \( V \) is the volume of the cone,
  • \( r \) is the radius of the base,
  • \( h \) is the height of the cone.

We are provided:

  • \( V = 3183.96 , \text{cubic yards} \)
  • \( \pi \approx 3.14 \)
  • The radius \( r = 13 , \text{yd} \)

First, we can calculate \( r^2 \):

\[ r^2 = 13^2 = 169 , \text{yd}^2 \]

Now, substitute \( V \), \( \pi \), and \( r^2 \) into the volume formula:

\[ 3183.96 = \frac{1}{3} \times 3.14 \times 169 \times h \]

To isolate \( h \), first calculate \( \frac{1}{3} \times 3.14 \times 169 \):

\[ \frac{1}{3} \times 3.14 \times 169 \approx 178.198 \]

Now we can rewrite the equation:

\[ 3183.96 = 178.198 \times h \]

Next, solve for \( h \):

\[ h = \frac{3183.96}{178.198} \]

Calculating that:

\[ h \approx 17.87 , \text{yd} \]

Thus, the height of the cone is approximately:

\[ h \approx 17.87 , \text{yards} \]

Rounded to the nearest hundredth, the height \( h \approx 17.87 \) yards.