Find the volume, in cubic inches, of a cone with a radius of 13 inches and a height of 27 inches.

1 answer

To find the volume of a cone, you 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.

In this case, the radius \( r \) is 13 inches and the height \( h \) is 27 inches. Plugging in these values:

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

First, calculate \( (13)^2 \):

\[ (13)^2 = 169 \]

Now substitute back into the volume formula:

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

Next, calculate \( 169 \times 27 \):

\[ 169 \times 27 = 4563 \]

Now substitute this back into the equation for volume:

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

Now, divide \( 4563 \) by 3:

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

So the volume becomes:

\[ V = 1521\pi \]

Finally, using the approximate value of \( \pi \) (which is about 3.14), we can find a numerical value for the volume:

\[ V \approx 1521 \times 3.14 \]

Calculating this:

\[ V \approx 4778.94 \]

Thus, the volume of the cone is approximately:

\[ \boxed{1521\pi} \text{ cubic inches} \]

If you want to express this numerically:

\[ \boxed{4778.94} \text{ cubic inches} \] (This is an approximation)