# Lesson Worksheet: Volumes of Cones Mathematics • 8th Grade

In this worksheet, we will practice calculating volumes of cones and solving problems including real-life situations.

**Q8: **

Find the volume of the cone. Give your answer in cubic millimeters to two decimal places.

**Q9: **

Determine, to the nearest hundredth, the volume of a cone of base diameter 32 and height 23.

**Q10: **

Find, to the nearest tenth, the volume of an oblique cone with a diameter of 13 inches and an altitude of 15 inches.

**Q13: **

Given that the volume of a right circular cone is 2,574 cm^{3}, determine its volume when its radius is doubled.

**Q14: **

Given that the volume of a right circular cone is 3,405 cm^{3},
determine its volume when its height is doubled.

**Q15: **

Given that the volume of a right circular cone is 643 cm^{3},
determine its volume when its height and radius are doubled.

**Q16: **

Which would have a greater effect on the volume of a cone, doubling its radius or doubling its height?

- Adoubling its radius
- Bdoubling its height

**Q17: **

If the radius of a cone was tripled but the volume stayed the same, what is relation between the new height and the original height ?

- A
- B
- C
- D
- E

**Q18: **

Victoria is making cone-shaped hats of diameter 4.2 inches and height 7.3 inches for a party. Find the volume of each cone in terms of .

- A in
^{3} - B in
^{3} - C in
^{3} - D in
^{3} - E in
^{3}

**Q19: **

David wants to make three identical cones made from plaster for a school project. Each cone needs to be 5 inches tall and 2 inches in diameter. How many cubic inches of plaster will David need to make his cones? Give your answer in terms of .

- A cubic inches
- B cubic inches
- C cubic inches
- D cubic inches
- E cubic inches

**Q20: **

A traffic cone has a diameter of 15 cm and a height of 0.6 m. By modelling it as a solid cone, work out the volume of the traffic cone, giving your answer to the nearest cubic centimeter.

**Q21: **

Work out the volume of the cone, giving your answer accurate to two decimal places.

**Q22: **

Work out the volume of the cone, giving your answer accurate to two decimal places.

- A527.79 units
^{3} - B1,583.36 units
^{3} - C3,166.73 units
^{3} - D2,111.15 units
^{3} - E175.93 units
^{3}

**Q23: **

Work out the volume of the cone, giving your answer accurate to two decimal places.

**Q24: **

Work out the volume of the cone, giving your answer accurate to two decimal places.

**Q25: **

An ice cream cone has a radius of 3 cm and a height of 11 cm. Work out the volume of the cone, giving your answer accurate to two decimal places.