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MathGrade 6-8

Volume of 3D Shapes Answer Key

Calculate the volume of prisms, cylinders, pyramids, cones, and spheres.

Looking for Volume of 3D Shapes answers? This complete answer key provides verified solutions for all student exploration activities and assessment questions in the ExploreLearning Volume of 3D Shapes Gizmo.

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Prisms and Cylinders

Q1.How do you find the volume of a rectangular prism?

Answer

Length × width × height. If it's 5 × 3 × 4 cm, volume = 60 cm³.

Q2.What's the formula for cylinder volume?

Answer

V = πr²h (area of circular base × height).

Pyramids, Cones, and Spheres

Q3.What's the formula for pyramid volume?

Answer

V = (1/3) × base area × height. It's 1/3 of a prism with the same base and height.

Q4.What's the formula for cone volume?

Q5.What's the formula for sphere volume?

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