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Volume of 3D Figures Practice Tests

These Grade 8 Math practice tests cover volume and surface area for prisms, cubes, cylinders, cones, spheres, and real-world solids.

Skills covered

  • Finding volume of rectangular and triangular prisms
  • Using cylinder, cone, and sphere formulas
  • Finding surface area of cubes, prisms, and cylinders
  • Converting cubic units and interpreting measurements
  • Applying scale factors to length, surface area, and volume

How to use these practice tests

Identify the solid, write the appropriate formula, substitute the measurements, and check whether the answer should use square units or cubic units. Keep \(\\pi\) in exact form unless a decimal is requested.

For more Grade 8 Math practice, return to the Grade 8 Math category.

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5 Tests
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1. Test

Grade 8 Volume of 3D Figures Practice Tests

Practice Grade 8 Math questions about volume, surface area, prisms, cylinders, cones, spheres, unit conversions, scaling, and real-world solids.

Choose the best answer for each question. Select the correct formula, substitute measurements carefully, and include square or cubic units.

10 Questions
0/10 Questions0 %
Correct 0
Incorrect 0
Unanswered 10
1. QuestionMultiple choice

What is the volume of a rectangular prism with length 4, width 3, and height 5?

Please select an answer first.

Correct answer: A

The correct answer is 6060 cubic units.

  1. Identify the solid and measurements: Choose the appropriate dimensions, base area, radius, height, or edge length.
  2. Apply the volume or surface-area formula: Use V=lwh=4(3)(5)=60V=lwh=4(3)(5)=60 cubic units.
  3. Check units and reasonableness: Use cubic units for volume, square units for surface area, and check that the result matches the scale of the solid.

Use V=lwh=4(3)(5)=60V=lwh=4(3)(5)=60 cubic units.

2. QuestionMultiple choice

What is the volume of a cube with side length 4?

Please select an answer first.

Correct answer: B

The correct answer is 6464 cubic units.

  1. Identify the solid and measurements: Choose the appropriate dimensions, base area, radius, height, or edge length.
  2. Apply the volume or surface-area formula: Use V=s3=43=64V=s^3=4^3=64 cubic units.
  3. Check units and reasonableness: Use cubic units for volume, square units for surface area, and check that the result matches the scale of the solid.

Use V=s3=43=64V=s^3=4^3=64 cubic units.

3. QuestionMultiple choice

A triangular prism has triangular base area 12 and length 10. What is its volume?

Please select an answer first.

Correct answer: C

The correct answer is 120120 cubic units.

  1. Identify the solid and measurements: Choose the appropriate dimensions, base area, radius, height, or edge length.
  2. Apply the volume or surface-area formula: Prism volume is base area times length: V=12(10)=120V=12(10)=120.
  3. Check units and reasonableness: Use cubic units for volume, square units for surface area, and check that the result matches the scale of the solid.

Prism volume is base area times length: V=12(10)=120V=12(10)=120.

4. QuestionMultiple choice

What is the volume of a cylinder with radius 3 and height 5?

Please select an answer first.

Correct answer: D

The correct answer is 45pi45\\pi cubic units.

  1. Identify the solid and measurements: Choose the appropriate dimensions, base area, radius, height, or edge length.
  2. Apply the volume or surface-area formula: Use V=pir2h=pi(32)(5)=45piV=\\pi r^2h=\\pi(3^2)(5)=45\\pi.
  3. Check units and reasonableness: Use cubic units for volume, square units for surface area, and check that the result matches the scale of the solid.

Use V=pir2h=pi(32)(5)=45piV=\\pi r^2h=\\pi(3^2)(5)=45\\pi.

5. QuestionMultiple choice

Which formula gives the volume of a rectangular prism?

Please select an answer first.

Correct answer: A

The correct answer is V=lwhV=lwh.

  1. Identify the solid and measurements: Choose the appropriate dimensions, base area, radius, height, or edge length.
  2. Apply the volume or surface-area formula: Multiply the three perpendicular dimensions: length, width, and height.
  3. Check units and reasonableness: Use cubic units for volume, square units for surface area, and check that the result matches the scale of the solid.

Multiply the three perpendicular dimensions: length, width, and height.

6. QuestionMultiple choice

What is the volume of a cube with side length 6?

Please select an answer first.

Correct answer: B

The correct answer is 216216 cubic units.

  1. Identify the solid and measurements: Choose the appropriate dimensions, base area, radius, height, or edge length.
  2. Apply the volume or surface-area formula: Use V=63=216V=6^3=216 cubic units.
  3. Check units and reasonableness: Use cubic units for volume, square units for surface area, and check that the result matches the scale of the solid.

Use V=63=216V=6^3=216 cubic units.

7. QuestionMultiple choice

A prism has base area 12 square units and height 7 units. What is its volume?

Please select an answer first.

Correct answer: C

The correct answer is 8484 cubic units.

  1. Identify the solid and measurements: Choose the appropriate dimensions, base area, radius, height, or edge length.
  2. Apply the volume or surface-area formula: Use V=Bh=12(7)=84V=Bh=12(7)=84 cubic units.
  3. Check units and reasonableness: Use cubic units for volume, square units for surface area, and check that the result matches the scale of the solid.

Use V=Bh=12(7)=84V=Bh=12(7)=84 cubic units.

8. QuestionMultiple choice

What is the volume of a cylinder with radius 2 and height 10?

Please select an answer first.

Correct answer: D

The correct answer is 40pi40\\pi cubic units.

  1. Identify the solid and measurements: Choose the appropriate dimensions, base area, radius, height, or edge length.
  2. Apply the volume or surface-area formula: Use V=pi(22)(10)=40piV=\\pi(2^2)(10)=40\\pi.
  3. Check units and reasonableness: Use cubic units for volume, square units for surface area, and check that the result matches the scale of the solid.

Use V=pi(22)(10)=40piV=\\pi(2^2)(10)=40\\pi.

9. QuestionMultiple choice

What is the volume of a rectangular prism measuring 2 by 3 by 4?

Please select an answer first.

Correct answer: A

The correct answer is 2424 cubic units.

  1. Identify the solid and measurements: Choose the appropriate dimensions, base area, radius, height, or edge length.
  2. Apply the volume or surface-area formula: Multiply the dimensions: V=2(3)(4)=24V=2(3)(4)=24.
  3. Check units and reasonableness: Use cubic units for volume, square units for surface area, and check that the result matches the scale of the solid.

Multiply the dimensions: V=2(3)(4)=24V=2(3)(4)=24.

10. QuestionMultiple choice

What units are appropriate for the volume of a box?

Please select an answer first.

Correct answer: B

The correct answer is Cubic units.

  1. Identify the solid and measurements: Choose the appropriate dimensions, base area, radius, height, or edge length.
  2. Apply the volume or surface-area formula: Volume measures three-dimensional space, so its units are cubic, such as cubic inches or cubic centimeters.
  3. Check units and reasonableness: Use cubic units for volume, square units for surface area, and check that the result matches the scale of the solid.

Volume measures three-dimensional space, so its units are cubic, such as cubic inches or cubic centimeters.

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