Find the area 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

Find the area 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

To find the area of a rectangle, you can use the formula:

Area = Length × Breadth

(a) For the rectangle with sides 3 cm and 4 cm: Area = 3 cm × 4 cm = 12 square centimeters (cm²)

(b) For the rectangle with sides 12 m and 21 m: Area = 12 m × 21 m = 252 square meters (m²)

(c) For the rectangle with sides 2 km and 3 km: Area = 2 km × 3 km = 6 square kilometers (km²)

(d) For the rectangle with sides 2 m and 70 cm, convert 70 cm to meters (1 m = 100 cm): Area = 2 m × (70 cm / 100) = 2 m × 0.7 m = 1.4 square meters (m²)

So, the areas of the rectangles are: (a) 12 cm² (b) 252 m² (c) 6 km² (d) 1.4 m²