Find the volume, in cubic inches, of a cone with a radius of

13 inches and a height of 27 inches.
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(1 point)
π
4778.36 cubic inches
176.98 cubic inches
14,335.09 cubic inches
1521 cubic inches

1 answer

To find the volume of a cone, we can use the formula:

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

where \( V \) is the volume, \( r \) is the radius, and \( h \) is the height.

Given:

  • Radius \( r = 13 \) inches
  • Height \( h = 27 \) inches

We can substitute these values into the formula:

\[ V = \frac{1}{3} \pi (13^2)(27) \]

Calculating \( 13^2 \):

\[ 13^2 = 169 \]

Now substitute this value into the volume formula:

\[ V = \frac{1}{3} \pi (169)(27) \]

Now multiply \( 169 \) by \( 27 \):

\[ 169 \times 27 = 4563 \]

Now substitute this back into the volume formula:

\[ V = \frac{1}{3} \pi (4563) \]

Calculating \( \frac{1}{3} \times 4563 \):

\[ \frac{4563}{3} = 1521 \]

Now include \(\pi\):

\[ V = 1521\pi \]

Using the approximate value of \(\pi \approx 3.14159\):

\[ V \approx 1521 \times 3.14159 \approx 4778.36 \text{ cubic inches} \]

Thus, the volume of the cone is approximately 4778.36 cubic inches, which corresponds to the first option.