Year 9

Read a cube net, then calculate the area of a prism net

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Practise the method.

Example 1

Cube net
Cube netSix connected square faces. A, B, C, D are in a row; E is above B and F is below B. Diagram not to scale. Use the labelled measurements.ABCDEF
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Answer:

Example 2

Rectangular-prism net
Rectangular-prism netA net with two 8 by 5 faces, two 5 by 5 faces and two 8 by 5 faces. All lengths are centimetres. Diagram not to scale. Use the labelled measurements.5 × 58 × 55 × 58 × 58 × 58 × 5
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Answer:

Example 3

Triangular-prism net
Triangular-prism netThree rectangles have dimensions 9 by 4, 12 by 4, and 15 by 4. Two right triangles have legs 9, 12 and hypotenuse 15. Diagram not to scale. Use the labelled measurements.9 × 412 × 415 × 491512
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Answer: