Find the volume of a cylinder with a height of 12 inches and a diameter of 8 inches. Use 3.14 for pi.

1. 602.88 cubic inches
2. 1,808.64 cubic inches
3. 150.72 cubic inches
4. 2,411.52 cubic inches

1 answer

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

\[ V = \pi r^2 h \]

where:

  • \( V \) is the volume,
  • \( r \) is the radius of the cylinder,
  • \( h \) is the height of the cylinder, and
  • \( \pi \) is approximately 3.14.

Given:

  • Diameter = 8 inches, so the radius \( r = \frac{8}{2} = 4 \) inches.
  • Height \( h = 12 \) inches.

Now, substituting the values into the formula:

\[ V = 3.14 \times (4)^2 \times 12 \]

Calculating \( (4)^2 \):

\[ (4)^2 = 16 \]

Now substituting this value into the volume formula:

\[ V = 3.14 \times 16 \times 12 \]

Calculating \( 16 \times 12 \):

\[ 16 \times 12 = 192 \]

Now, substituting back into the volume formula:

\[ V = 3.14 \times 192 \]

Calculating \( 3.14 \times 192 \):

\[ 3.14 \times 192 = 602.88 \]

Therefore, the volume of the cylinder is:

\[ \boxed{602.88} \text{ cubic inches} \]

The correct answer is option 1: 602.88 cubic inches.