1. Introducing Volume of Composite Shapes
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2. What is the volume of this shape
[the points of this 3D grid are 1 cm apart] 2 2 2 3 2 2 5 4 6 1 4 3
V = 3
x 4
x 4
= 48
cm3
V = 2
x 2
x 2
= 8
cm3
V = 2
x 2
x 5
= 20
cm3
Total Volume = 56
cm3
V = 1
x 6
x 3
= 18
cm3
Total Volume = 38
cm3
= 1 cm3
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3. What is the volume of this shape
[the points of this 3D grid are 1 cm apart] 4 1 3 1 3 3 6 3 1 1 2 3 3 5 4
V = 5
x 4
x 6
= 120
cm3
V = 3
x 3
x 1
= 9
cm3
V = 3
x 4
x 1 =
cm3
V = 1
x 3
x 3
= 9
cm3
Total Volume =
108
cm3
V = 1
x 3
x 2
= 6
cm3
Total Volume = 24
cm3
= 1 cm3
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4. Points in this 3D grid are 1 cm apart.
Calculating Volumes 1 2 3 4 5 6 7 8 9 10
30 cm3
44 cm3
24 cm3
40 cm3
40 cm3
103 cm3
16 cm3
55 cm3
24 cm3
35 cm3
Points in this 3D grid are 1 cm apart.
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5. © T Madas