Area of Compound Shapes
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Area, formulae, and the correct height

Area, formulae, and the correct height

The key formula for this topic is the trapezium area formula:

Atrapezium=12(a+b)h A_{\text{trapezium}} = \frac{1}{2}(a+b)h Atrapezium​=21​(a+b)h

Also remember Arectangle=bhA_{\text{rectangle}} = bhArectangle​=bh and Atriangle=12bhA_{\text{triangle}} = \frac{1}{2}bhAtriangle​=21​bh when you split a compound shape into simpler parts.

Area of Compound Shapes Lesson

  1. IGCSE
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  3. /Area of Compound Shapes