Question

This cone has a radius of 18 inches and a height of 3 feet.

What is the length of the radius in feet?
Round your answer to the nearest tenth place.
Find the volume of the cone in cubic feet?
Round your answer to the nearest tenth place.

Answer 1

Radius = 1.5ft

Volume = 7.1 ft³

Explanation:

Hello!

Part 1

The length of the radius in feet can be found by dividing 18 inches by 12.

• 18/12
• 1.5

The length of the radius in feet is 1.5ft

Part 2

The formula for the volume of a cone is
`V =\frac13 \pi r^2h`

Solve

• 
  `V = \frac13 \pi (1.5)^2(3)`
• 
  `V = 2.25\pi`
• 
  `V = 7.0685834706 \approx 7.1`

The volume is approximately 7.1 ft³