MyMathKidK-8 Curriculum

Grade 8 Volume Worksheets

Master volume step by step, from basic concepts to advanced problem solving

Common Core: 8.G

Watch & Learn

Learning Path

Start with Lesson 1 and work your way through!

1

Volume of Cylinders

Easy

Calculate cylinder volume using V = πr²h

Apply V = πr²hSolve for missing dimensions
2

Volume of Cones

Easy

Calculate cone volume using V = ⅓πr²h

Apply V = ⅓πr²hCompare to cylinder volume
3

Volume of Spheres

Easy

Calculate sphere volume using V = ⁴⁄₃πr³

Apply V = ⁴⁄₃πr³Solve for radius from volume
4

Composite Solids

Medium

Volume of combined 3D shapes

Break into component shapesAdd or subtract volumes
5

Unit Review

Easy

Review all volume concepts

Review all conceptsPrepare for assessment

How to solve Grade 8 volume problems

Real problems from these worksheets, solved one step at a time — the same explanations your child sees when practicing online.

  1. Example 1

    A cylinder has radius 5 in and height 10 in. What is its volume in cubic inches? Use π ≈ 3.14.

    1. Volume of a cylinder = π × r² × h, with π ≈ 3.14.
    2. r² = 5 × 5 = 25, and 25 × 10 = 250.
    3. 3.14 × 250 = 785. The volume is 785 cubic inches.

    Answer: 785

  2. Example 2

    A sphere has a radius of 8 cm. What is its volume in cubic centimeters? Use π ≈ 3.14. Round to the nearest hundredth.

    1. Volume of a sphere = ⁴⁄₃ × π × r³, with π ≈ 3.14.
    2. r³ = 8 × 8 × 8 = 512.
    3. 3.14 × 512 = 1607.68, and 4 × 1607.68 = 6430.72.
    4. 6430.72 ÷ 3 = 2143.5733…, which rounds to 2143.57. The volume is 2143.57 cubic centimeters.

    Answer: 2143.57

  3. Example 3

    A cone with radius 5 ft and height 3 ft is carved out of a cylinder with the same radius and height. What volume is left, in cubic feet? Use π ≈ 3.14.

    1. Cylinder: 3.14 × 25 × 3 = 3.14 × 75 = 235.5.
    2. The cone is ⅓ of that: 235.5 ÷ 3 = 78.5.
    3. 235.5 − 78.5 = 157. The volume left is 157 cubic feet.

    Answer: 157

Frequently Asked Questions

Are these Grade 8 Volume worksheets free?
All printable Volume worksheets on MyMathKid are free to download and print. Answer keys are a premium feature available with a subscription.
How many Volume worksheets are available for Grade 8?
There are 5 progressive Volume lessons with worksheets for Grade 8, covering skills from foundational concepts to advanced problem solving.
Are these Volume worksheets aligned to Common Core?
Yes — Grade 8 Volume aligns with Common Core 8.G (Geometry).
What will my child practice with these Volume worksheets?
Your child will practice: Volume of Cylinders, Volume of Cones, Volume of Spheres, Composite Solids, and more.