Volume of Cones and Spheres
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Volume of Cones and Spheres
Volume of cones and spheres worksheet: three cones and three spheres drawn with their measures, with 3.14 for π, to the nearest tenth. Grade 8, with an answer key.
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Teach it first
Volume of a ConeA teaching handout to hand out before this sheet: the rule, worked examples and common mistakes.Volume of a SphereA teaching handout to hand out before this sheet: the rule, worked examples and common mistakes.- Pages
- 1
- Last updated
- Time
- About 15 minutes
- Answer key
- Included
- Printing
- Black and white
- Related curriculum
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Use the formulas for the volume of a cylinder, a cone and a sphere, and give the answer in terms of π.
Reviewed by Mr. Robert Harrison, Teacher. How we check worksheets
How to use this sheet
- For counting cubes, have the child find the number in one layer and multiply by the number of layers.
- Have the child write the units each time: cubic units for volume, square units for surface area.
- For surface area, have the child list each face and its area, and check that they have counted every face.
Common mistakes
- Counting only the cubes that can be seen and missing the hidden ones.
- Mixing up surface area and volume. Surface area is the wrapping paper; volume is what fills the box.
- Forgetting the 1/3 in the volume of a cone or a pyramid.
- Writing square units for a volume. Volume is counted in cubes, so its units are cubic, such as cm³.
