Work through the levels in order. Type your answer and press Check — open the worked solution if you get stuck. Answers like -6, 3/4 or 0.25 are typed exactly as shown.
Level 1 · Warm-up
1 How many faces does a rectangular prism have?
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6.
2 Find the surface area of a cube with side 4 cm. (number of cm2)
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96 cm2.
3 How many faces does a triangular prism have?
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5.
Level 2 · Core
4 Find the surface area of a prism 8 cm by 5 cm by 3 cm. (number of cm2)
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158 cm2.
5 Find the surface area of a cube with side 5 cm. (number of cm2)
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150 cm2.
6 A triangular prism end has perimeter 12 cm and the prism is 7 cm long. What do the three rectangles total? (cm2)
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12 × 7 = 84 cm2.
Level 3 · Challenge
7 A triangular prism has a 3-4-5 end and length 10 cm. Find its surface area. (cm2)
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12 + 120 = 132 cm2.
8 A cylinder has r = 2 cm and h = 5 cm. Find the CURVED surface area in terms of π. (in terms of π)
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2π × 2 × 5 = 20π cm2.
9 A closed cylinder has r = 3 cm and h = 10 cm. Find the total surface area in terms of π. (in terms of π)
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78π cm2 ≈ 245.0 cm2.