year 8 maths

162 Chapter 3 Measurement and Pythagoras’ theorem
Example 18b
5 Find the volume of these prisms.
a
b
2 m
c
5 cm
8 cm
10 cm
5 m
3 m
7 cm
20 cm
d
6 m
2 m
e
3 mm
4 mm 12 mm
11 mm
f
7 m
2 m
3 m
6 m
5 m
Example 19
6 Find the volume of these cylinders. Round the answer to two decimal places.
a
10 m b 40 mm
5 m
10 mm
c
20 cm d
4 cm
7 cm
50 cm
e
f
10 m
14 m
7 m
3 m
PROBLEM-SOLVING AND REASONING
7, 8, 12 8–10, 12, 13
9–11, 13, 14
7 A cylindrical tank has a diameter of 3 m and height 2 m .
a Find its volume in m 3 , correct to three decimal places.
b What is the capacity of the tank in litres?
8 These solids are made up of more than one rectangular prism. Use addition or subtraction to find the
volume of the composite solid.
a
4 cm
5 cm
3 cm
2 cm
2 cm
b
10 m
4 m c 8 cm
3 m
2 cm
4 cm
9 cm
Cambridge Maths NSW
Stage 4 Year 8 Second edition
ISBN 978-1-108-46627-1 © Palmer et al. 2018
Cambridge University Press
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