Page 89 - Mathematics_Std_4
P. 89
Exercise 1
1. Measure the length of an exercise book and record it in
centimetres. Also, measure the width of the same exercise
FOR ONLINE READING ONLY
book and record it in centimetres.
(a) Find the total length of all four sides of the exercise
book
(b) What does the length of four sides of the exercise
book represent?
2. The classroom floor has a length of 20 metres and a width
of 12 metres. Find its perimeter.
3. Find the perimeter of each of the following figures:
(a) (b)
4 cm
10 cm 18 cm
(c)
8 cm
16 cm (d)
7 cm
5 cm
15 cm
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MATHEMATICS STD 4 PB 2024.indd 82
MATHEMATICS STD 4 PB 2024.indd 82 06/11/2024 17:17:17
