Use triangle-and-rectangle nets for surface area — Guided Practice — page 1
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Use triangle-and-rectangle nets for surface area — Guided Practice — page 2
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Worksheet directions

Grade 6 • Guided Practice • Work with your teacher or a partner. Discuss the model or strategy, then complete each problem.

Sample questions

  1. A square pyramid has base side 5 cm and each triangular face has perpendicular height 6 cm. Draw a net and calculate surface area.
  2. A student computes only the four triangular faces and calls that the total surface area. Explain which face is missing and find the full area in square centimeters.
  3. Four triangular panels with base 5 cm and height 8 cm form a pyramid-shaped roof without a base panel. Find the panel area. How much would adding a square base increase it?
  4. The net has a square base and four congruent triangular faces. Measurements are in centimeters; the dashed segment is a triangle’s height. Find the surface area.
  5. Four triangular panels with base 4 cm and height 8 cm form a pyramid-shaped roof without a base panel. Find the panel area. How much would adding a square base increase it?

See the preview for diagrams, answer spaces, and the complete layout.

Common Core connections

Source labels: 6.G.A.4. Review the learning goals below to check the fit for your class.

  • 6.G.A.4 — Surface area using nets

Bring it into your lesson

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