year 8 maths

Chapter review
191
Short-answer questions
1 Convert these measurements to the units given in the brackets.
a 2 m (mm) b 50 000 cm (km)
c 3 cm 2 (mm 2 ) d 4000 cm 2 (m 2 )
e 0.01 km 2 (m 2 ) f 350 mm 2 (cm 2 )
g 400 cm 3 (L)
h 0.2 m 3 (L)
2 Find the perimeter/circumference of these shapes. Round the answer to two decimal places where
necessary. Assume that all angles that look right angled are 90° .
a
5 m b 6 cm
c
3 m
8 m
8 cm
d
e
12 m f
20 mm
8 m
3 cm
2 cm
3 Find the area of these shapes. Round the answer to two decimal places where necessary.
a
5 cm
11 cm
b
18 m
7 m
c
2 cm
6 cm
d
20 km
e
f
8 km
14 km
16 m
4 cm
10 cm
g
h
8 m
i
110°
3 cm
4 m
2 cm
4 Find the area of these composite shapes. Assume that all angles that look right angled are 90° .
a
10 cm
b
c
5 cm
5 cm
4 cm
9 cm
14 cm
6 cm
8 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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