Page 152 - Maths Class 06

Area of the wall = Length × Breadth
100 = 20 × Breadth
100
Breadth = = 5 m
20
EX AM PLE 6. Split the fol low ing shapes into rect an gles and squares and find their ar eas. (The mea sures
are given in centi metres).
(a) 2 2 (b) 1
A B

3 3 1
1
3 C
1
1
8 8 D
1
3 1
E
3 3 1

G F
2 2

SOLUTION : (a) Area of Fig. I (rectangle) = 8 cm × 2 cm = 16 sq. cm 2 2
Area of Fig. II (rectangle) = 8 cm × 2 cm 3 3
I 3
= 16 sq. cm
8 III II 8
Area of Fig. III (rectangle) = 3 cm × 2 cm
= 6 sq. cm 3
3 3
Area of complete figure =(16 + 16 + )6 sq. cm
2 2
= 38 sq. cm
1
(b) Area of Fig. I (square) = ´ =1 1 1 sq. cm A B
I 1
Area of Fig. II (rectangle) = ´ =1 2 2 sq. cm 1 C

Area of Fig. II (rectangle) = ´ =1 3 3 sq. cm II 1 1
D
Area of Fig. IV (rectangle) = ´1 4 = 4 sq. cm III 1
1
Total Area of complete figure=(1 + + + )2 3 4 sq. cm E
IV 1
= 10 sq. cm G F

Exercise10.3

1. Find the area of rectangle whose length and breadth are:
(a) length = 12 cm, breadth = 8 cm (b) length = 14 cm, breadth = 8 cm
(c) length =25 cm, breadth = 16 cm (d) length = 12.6 m, breadth = 9 m

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