a jar of peanut butter has a height of 16 cm in a width of 10 cm find the volume of the peanut butter jar use 3.14 for pi

1 answer

To find the volume of a jar that is shaped like a cylinder, you can use the formula for the volume of a cylinder:

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

where:

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

Given:

  • Height (\( h \)) = 16 cm
  • Width = 10 cm, which means the diameter is 10 cm. Therefore, the radius (\( r \)) is:

\[ r = \frac{\text{diameter}}{2} = \frac{10}{2} = 5 \text{ cm} \]

Now we can plug the values into the volume formula:

\[ V = 3.14 \times (5)^2 \times 16 \]

Calculating \( (5)^2 \):

\[ (5)^2 = 25 \]

Now substituting that back into the volume formula:

\[ V = 3.14 \times 25 \times 16 \]

Calculating \( 25 \times 16 \):

\[ 25 \times 16 = 400 \]

Now substituting this result back into the volume calculation:

\[ V = 3.14 \times 400 \]

Finally, calculating this:

\[ V = 1256 \text{ cm}^3 \]

Thus, the volume of the peanut butter jar is 1256 cm³.