1. ©G Dear 2010 – Not to be sold/Free to use
Applications of Area,
Perimeter & Volume
Applied Mathematic
(Preliminary General 1)
Area of
Composite Figures
Stage 6 - Year 11
Press Ctrl-A
©G Dear 2010 – Not to be sold/Free to use

2. Area of Composite Figures
Rectangles
Press L1
= 8 cm
ATotal = ARectangle
+ARectangle B1
= 4 cm
= L1 x B1
+ L2 x B2
= 8 x 4
+ 6 x 4 L2
= 6 cm
= 32
+ 24
= 56 cm2 B2
= 4 cm
End of
Slide
Do Questions 1

3. Area of Composite Figures
Triangles
Press
ATotal = ATriangle
+ARectangle
h= 7cm
15 cm
= 0.5 x b x h
+ L x B
[15-8]
b= 10 cm
= 0.5 x 10 x 7
+ 10 x 8
B =8 cm
= 35
+ 80
Press
L=10 cm
= 115 cm2
End of
Slide
Do Questions 2

4. ATotal = ATriangle +ASemiecircle
Area of Composite Figures
Rectangles and Circles
Press
Press
ATotal = ATriangle
+ASemiecircle
A= 0.5 x π r2
= L x B
+ 0.5 x πr2
D= 6 cm
14 cm
[r=3]
= 6 x 11
+ 0.5 x π x 32
A=LB
≈ 66
+ 14.1
B =11 cm
[14-3]
≈ 80.1 cm2
L=6 cm
End of
Slide
Do Questions 3 and 4

5. ATotal = ATriangle +AQuadrant
Area of Composite Figures
Rectangles and Circles
Press
Press
ATotal = ATriangle
+AQuadrant
A= 0.25 x π r2
15 cm
= L x B
x πr2
r= 5 cm
= 5 x 8
x π x 52
A=LB
B =8 cm
≈ 40
+ 19.6
≈ 59.6 cm
L=5 cm
End of
Slide
Do Questions 5