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Year 6 · Measurement
Area of a parallelogram
Area of a triangle is half base × height. A parallelogram is base × height.
How to do it
- Find the base and the height (the height is at right angles to the base).
- Triangle: multiply and halve. Parallelogram: just multiply.
Worked example
Parallelogram, base 8, height 5
Cut off a triangle and slide it across: an 8 by 5 rectangle
8 × 5 = 40 cm²
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Watch outUse the perpendicular height, not a slanted side.
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