1. ©G Dear2008 – Not to be sold/Free to use
Area
Composite Areas
Stage 4 - Year 9
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©G Dear2008 – Not to be sold/Free to use

2. Composite Area - Add A Triangle = 0.5 x b x h = 0.5 x 6 x 3 = 9 m2
A Rectangle = L x B
= 6 x 4
4 m
= 24 m2
6 m
A Total = A Triangle + A Rectangle
Press =
= 33 m2

3. Composite Area - Minus A Large = L x B = 10 x 6 = 60 m2
A Small = L x B
10 m 5m
= 5 x 2
= 10 m2
A Total = A Large - A Small
6 m =
= 50 m2

4. Composite Shapes Area = Square + 4 x Semi-circles
= Square + 2 x Circles
Area = s2 +
2 x ( r2)
4 cm
= 42 +
2 x ( 22)
= …
≈ 41.1 cm2
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