Find the areas of the rectangles whose two adjacent sides are:

(i) 14 cm and 23 cm

(ii) 3 km and 4 km

(iii) 2 m and 90 cm

Area of rectangle = length × breadth

(i) Length = 23 cm, Breadth = 14 cm

Area = 23 × 14 = 322 sq. cm

Hence, the area of the rectangle is 322 sq. cm.

(ii) Length = 4 km, Breadth = 3 km

Area = 4 × 3 = 12 sq. km

Hence, the area of the rectangle is 12 sq. km.

(iii) Length = 2 m = 200 cm, Breadth = 90 cm

Area = 200 × 90 = 18000 sq. cm

Converting to sq. m:

Area = $\dfrac{18000}{10000}$ sq. m = 1.8 sq. m

Hence, the area of the rectangle is 1.8 sq. m.