Note: Figure is not drawn to scale.

If h = 11 units and r = 4 units, then what is the approximate volume of the cone shown above?
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B.

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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 of the base, and \( h \) is the height of the cone.

Given:

  • \( h = 11 \) units
  • \( r = 4 \) units

Now, plug the values into the formula:

\[ V = \frac{1}{3} \pi (4^2) (11) \]

Calculating \( 4^2 \):

\[ 4^2 = 16 \]

Now substituting back into the formula:

\[ V = \frac{1}{3} \pi (16) (11) \]

Now calculating \( 16 \times 11 \):

\[ 16 \times 11 = 176 \]

Now substituting this into the volume formula:

\[ V = \frac{1}{3} \pi (176) \]

Calculating \( \frac{176}{3} \):

\[ \frac{176}{3} \approx 58.67 \]

So now we have:

\[ V \approx 58.67 \pi \]

Using \( \pi \approx 3.14 \) for an approximate numerical answer:

\[ V \approx 58.67 \times 3.14 \approx 183.6 \]

Thus, the approximate volume of the cone is about \( 183.6 \) cubic units.

Final Answer: Approximately \( 183.6 \) cubic units.