Page 233 - SK Year 5 Mathematics DLP

10 cm
3 Area of the composite shape

= area + area
60 cm = ( × 60 cm × 40 cm) + ( × cm × 100 cm)
40 cm
1
1
10 cm 100 cm = 2 cm + cm 2 2
2

= cm 2

4 Dad planted grass on the shaded region as shown. Find the area of
the grassy compound.
6 m
Area of the grassy compound
= area of the rectangle – area of the square

4.8 m = (6 m × 4.8 m) – (2 m × 2 m)
2
2 m = m – m 2
= m 2
2 m

1 Calculate the area of each of the composite shapes below.

a 7 m b
5 m
4 m 10 cm
7 m
6 cm 6 cm
2 cm 6 cm
1 m
2 Calculate the area of the shaded region. 18 cm

a b

100 m
80 m
3 cm

50 m 50 m 5 cm

• Relate the activity of calculating the area of the composite 225
6.3.2 shapes to daily life situations such as the area of group table’s
surface, the area of playground, and the area of tiled floor.