# 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

(d) 2 m and 70 cm

**Solution:**

We will be using the area of rectangle formula to calculate the areas

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

Area = l × b

= 3 × 4

= 12 cm^{2}

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

Area = l × b

= 12 × 21

= 252 m^{2}

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

Area = l × b

= 2 × 3

= 6 km^{2}

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

Area = l × b

= 2 × 0.70

= 1.40 m^{2}

NCERT Solutions for Class 6 Maths Chapter 10 Exercise 10.3 Question 1

## 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 (d) 2 m and 70 cm

**Summary:**

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 (d) 2 m and 70 cm are (a)12 sq. cm (b) 252 sq. m (c) 6 sq. km (d) 1.40 sq. m respectively.

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