The volume of this cone is 376.8 cubic millimeters. What is the height of this cone?

Use ​𝜋 ≈ 3.14 and round your answer to the nearest hundredth.

6 mm

h ≈
millimeters

1 answer

To find the height of the cone, we can use the formula for the volume of a cone:

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

Where:

  • \( V \) is the volume,
  • \( r \) is the radius of the base,
  • \( h \) is the height.

We are given:

  • Volume \( V = 376.8 \) cubic millimeters,
  • \( \pi \approx 3.14 \).

We also need to note that from the problem you provided, it seems like the radius is not mentioned. However, if you assume a radius (for example, given as 6 mm, or if that's assumed), you can then solve for the height. I'll proceed with using \( r = 6 \) mm.

First, let's plug in the values into the formula:

\[ 376.8 = \frac{1}{3} \times 3.14 \times (6)^2 \times h \]

Calculating \( 6^2 \):

\[ 6^2 = 36 \]

Now substitute this into the volume formula:

\[ 376.8 = \frac{1}{3} \times 3.14 \times 36 \times h \]

Calculating \( \frac{1}{3} \times 3.14 \times 36 \):

\[ \frac{1}{3} \times 3.14 \times 36 = \frac{113.04}{3} = 37.68 \]

Now the equation becomes:

\[ 376.8 = 37.68h \]

To solve for \( h \), divide both sides by \( 37.68 \):

\[ h = \frac{376.8}{37.68} \approx 10 \]

Rounded to the nearest hundredth, the height \( h \) is:

\[ h \approx 10.00 \text{ mm} \]

Thus, the height of the cone is approximately 10.00 millimeters. If the radius was something other than 6 mm, please provide that information for accurate calculations.