Selina Concise Class 6 Math Chapter 30 Perimeter And Area Of Plane Figures Exercise 30B Solution
EXERCISE 30B
(1) (i) Area = (15 × 6.4) cm2 = 96 cm2
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(ii) Area = (8.5 × 5) m2 = 42.5 m2
(iii) Breadth = 90 cm = 0.9 m
Area = (3.6 × 0.9) m2 = 3.24 m2
(iv) Breadth = 180 mm = 1.8 cm
Area = (24 × 1.8) cm2 = 43.2 cm2
(2) (i) Area = (7.2)2 cm2 = (7.2 × 7.2) = 51.84 cm2
(ii) Area = (4.5)2 m2 = (4.5 × 4.5) m2 = 20.25 m2
(iii) Area = (4.1) cm2 = (4.1 × 4.1) cm2 = 16.81 cm2