Find the volume of a cylinder with a diameter of 14 inches and a height of 12 inches. Use 3.14 for π

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7,385.28 in3

263.76 in3

1,846.32 in3

527.52 in3

1 answer

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

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

where:

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

Given:

  • Diameter = 14 inches, so the radius \( r \) is half of that: \[ r = \frac{14}{2} = 7 \text{ inches} \]
  • Height \( h = 12 \) inches.

Now, substitute the values into the formula:

\[ V = 3.14 \times (7^2) \times 12 \]

Calculating \( 7^2 \): \[ 7^2 = 49 \]

Now substitute back in:

\[ V = 3.14 \times 49 \times 12 \]

Calculating \( 49 \times 12 \): \[ 49 \times 12 = 588 \]

Now substitute back in:

\[ V = 3.14 \times 588 \]

Now calculate \( 3.14 \times 588 \): \[ V = 3457.92 \text{ cubic inches} \]

Thus, if we break it down correctly, the final volume should actually be:

\[ V = 3.14 \times 588 = 1846.32 \text{ cubic inches} \]

So, the correct answer is:

1,846.32 in³.