Question

X. Find the areas of the rectangles whose sides are:
(a) 3 cm and 4 cm (b) 12 m and 21 m (c) 2 km and 3 km
200cm
(d) 2 m and 70 cm​

Answer 1

Answer:

Step-by-step explanation:

a- 3x4=12cm²

n-12x21=252cm²

c-2x3.2=6.2km²

d-2x0.7=1.4m²

Answer 2

Answer:

We know that

Area of rectangle = Length × Breadth

(a) l = 3 cm and b = 4 cm

Area = l × b = 3 × 4

= 12 cm 2

(b) l = 12 m and b = 21 m

Area = l × b = 12 × 21

= 252 m 2

(c) l = 2 km and b = 3 km

Area = l × b = 2 × 3

= 6 km 2

(d) l = 2 m and b = 70 cm = 0.70 m

Area = l × b = 2 × 0.70

= 1.40 m