A cone has a radius of 12 centimeters and a height of 18 centimeters. What is the volume of the cone in cubic centimeters

1 answer

The volume \( V \) of a cone can be calculated using the formula:

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

where \( r \) is the radius and \( h \) is the height of the cone.

Given:

  • Radius \( r = 12 \) cm
  • Height \( h = 18 \) cm

Substituting the given values into the formula:

\[ V = \frac{1}{3} \pi (12)^2 (18) \]

Calculating \( (12)^2 \):

\[ (12)^2 = 144 \]

Now substituting back into the formula:

\[ V = \frac{1}{3} \pi (144)(18) \]

Calculating \( 144 \times 18 \):

\[ 144 \times 18 = 2592 \]

Now substituting this value back into the volume formula:

\[ V = \frac{1}{3} \pi (2592) \]

Calculating \( \frac{2592}{3} \):

\[ \frac{2592}{3} = 864 \]

So, we have:

\[ V = 864 \pi \]

For a numerical approximation, using \( \pi \approx 3.14 \):

\[ V \approx 864 \times 3.14 \approx 2711.76 \]

Thus, the volume of the cone is:

\[ \boxed{864\pi} \text{ cubic centimeters, or approximately } 2711.76 \text{ cubic centimeters.} \]