A cylinder has a radius of 3cm and a side of 5 cm

Find the volume of the cylinder, in cubic centimeters. Use 3.14 for pi. Round your answer to the nearest tenth.

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 of the base,
  • \( h \) is the height of the cylinder.

Given:

  • Radius (\( r \)) = 3 cm
  • Height (\( h \)) = 5 cm
  • \( \pi \) ≈ 3.14

Now, substitute the values into the formula:

\[ V = 3.14 \times (3^2) \times 5 \]

First, calculate \( 3^2 \):

\[ 3^2 = 9 \]

Now substitute this back into the equation:

\[ V = 3.14 \times 9 \times 5 \]

Calculate \( 9 \times 5 \):

\[ 9 \times 5 = 45 \]

Now substitute this back into the equation:

\[ V = 3.14 \times 45 \]

Now multiply:

\[ 3.14 \times 45 = 141.3 \]

Thus, the volume of the cylinder is approximately \( 141.3 \) cubic centimeters.

Rounded to the nearest tenth, the volume is:

\[ \boxed{141.3} , \text{cm}^3 \]