with a height of 9cm and a raduis of 5cm. what is the volume of the cone in cubic centimeters.use 3.14 for pi

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 of the base,
  • \( h \) is the height,
  • \( \pi \) is approximately 3.14.

Given:

  • \( r = 5 \) cm,
  • \( h = 9 \) cm,
  • \( \pi \approx 3.14 \).

Now, plug in the values:

\[ V = \frac{1}{3} \times 3.14 \times (5)^2 \times 9 \]

First, calculate \( (5)^2 \):

\[ (5)^2 = 25 \]

Now substitute back into the volume formula:

\[ V = \frac{1}{3} \times 3.14 \times 25 \times 9 \]

Now calculate \( 25 \times 9 \):

\[ 25 \times 9 = 225 \]

Now substitute this value in:

\[ V = \frac{1}{3} \times 3.14 \times 225 \]

Next, calculate \( 3.14 \times 225 \):

\[ 3.14 \times 225 = 706.5 \]

Finally, divide by 3:

\[ V = \frac{706.5}{3} \approx 235.5 \]

Thus, the volume of the cone is approximately 235.5 cubic centimeters.