Question

m 25 cm = 1 m +0.25 m = 1.25 m
(since 25 cm = 0.25m)
Area of the cloth
length of the cloth x breadth of the cloth
= 2 mx 1.25 m = 2.50 sqm
EXERCISE 10.3
Find the areas of the rectangles whose sides are:
(b) 12 m and 21 m
a) 3cm and 4 cm
(c) 2 km and 3 km
Find the areas of the squares whose sides are:
(d) 2 m and 70 cm
cm
(b) 14 см​

Answer 1

Explanation:

Q. Find the areas of the rectangles whose sides are:

a) 3cm and 4 cm

= 3*4= 12cm

(b) 12 m and 21 m

= 12*21= 252

(c) 2 km and 3 km

= 2*3= 6

Q. Find the areas of the squares whose sides are:

(d) 2 m and 70 cm

= 0.02+70= 70.02cm

= 70.02*70.02= 4902.8004

(b) 14 см

= 14*14= 196