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Year 7 maths · U.5 · Area of plane figures

Area of a rectangle with a triangle on top

Add the area of the rectangle and the area of the triangle.

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  1. A shape is a rectangle 9 cm wide and 7 cm tall with a triangle on top. The triangle has the same 9 cm base and a height of 2 cm. What is the total area in cm²?

    Answer: 72

  2. A shape is a rectangle 6 cm wide and 6 cm tall with a triangle on top. The triangle has the same 6 cm base and a height of 11 cm. What is the total area in cm²?

    Answer: 69

  3. A shape is a rectangle 5 cm wide and 11 cm tall with a triangle on top. The triangle has the same 5 cm base and a height of 4 cm. What is the total area in cm²?

    Answer: 65

Tip: Add the area of the rectangle and the area of the triangle.

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