8th Grade Composite Solids Quizzes, Questions & Answers

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Geometry Arithmetic Arithmetic Sequences Geometric Translation Dilation Modular Addition Modular Multiplication Intersections Euclidean Algorithm Modulo Basics Vertical Angles Coprime Numbers Composite Solids Divisibility Proofs

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Composite Surface Area

Get ready to think about the outside of 3D shapes! In this quiz, you’ll find surface area for solids made by joining shapes together. You’ll practice counting only the exposed faces, leaving out any sides that...

Questions: 20 | Attempts: 10 | Last updated: Nov 21, 2025

Sample Question 1
A cube with a side 6 cm has a hemisphere of radius 3 cm on top. Find the total surface area.

216 cm²

244.3 cm²

288 cm²

314 cm²

Sample Question 2
A cylinder has a radius of 4 cm and a height of 10 cm. A cone with radius 4 cm and height 6 cm is placed on top of the cylinder. Find the total surface area.

200.9 cm²

326.7 cm²

392.2 cm²

452.4 cm²

Sample Question 3
A sphere of radius 5 m is cut in half. Find the surface area of one half (include the base).

130.9 m³

261.8 m³

314.2 m³

523.6 m³