132
Area of composite shapes in rectangles
I have been around for a million years, but I am no more
than a month old. What am I?
Use lines to divide the composite shape into smaller rectangles. Calculate the area of each
rectangle and record this measurement in the middle of the rectangle. Calculate the area
of the composite shape by adding up all the smaller rectangle areas. Match the letter next
to each question with the correct answer to solve the riddle. Where necessary, round to
two decimal places.
28.4 cm
5.3 m
11.5 m
13.7 cm
13.5 m
16.9 cm
5.9 cm
6.3 cm
19.6 m
H
O
4.2 mm
2.8 m
3.2 mm
4.3 mm
13.7 mm
8.5 m
7.8 mm
12.6 m
2.8 m
17.9 m
8.3 mm
1.8 cm
N
M
Find the area of paving, given that the pavers
are all the same size.
2.3 cm
11.7 cm
19.5 cm
280 mm
3.1 cm
2.1 cm
210 mm
E
132 300 mm2 316.02 cm2 209.95 cm2
T
166.04 m2 203.65 m2 203.65 m2 192.19 mm2
Copyright © Lee Blake and Jessica Murphy 2009. Permission is granted for this page to be photocopied by the purchasing institution.
Published by Macmillan Education Australia. ISBN 978 1 4202 2886 1