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Grade 8 · Geometry

Surface area

127 problems in this skill, each with a solver-verified answer key. Answers are checked the moment you submit — with a hint if you want one and a worked solution afterwards.

What the problems look like

A few statements from this skill. Answers, hints and worked solutions live in the practice session.

  1. Warm-up

    A rectangular prism has length 4 cm, width 5 cm, and height 6 cm. What is its surface area in square centimeters?

  2. Warm-up

    A cube has side length 5 cm. What is its surface area in square centimeters?

  3. Warm-up

    What is the total surface area of a rectangular prism with length 4 cm, width 5 cm, and height 6 cm?

Problems shown under their original terms: Generated (solver-verified).

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See every Geometry skill for grade 8