Question

If the length and breadth of a rectangle are 10 cm, 5 cm, respectively then the area of the rectangle is. a)10 sq cm b)50 sq cm c)15 sq cm d)25 cm​

Answer 1

Answer:

b) 50sqcm

Area of rectangle

l×b

10cm×5cm

50cm²

Answer 2

Answer:

Hence, area of a rectangle = length × breadth

A = l × b

Where A is the area and l and b are length and breadth of a rectangle.

Area of each small square = 1 sq cm

Area of rectangle in figure 1 by counting the squares = 6 sq. cm

Area = 6 square cm

Length of rectangle = 3 cm

Breadth of rectangle = 2 cm

Area = 3 × 2 = 6 sq. cm

Area of each small square = 1 sq cm

Area of rectangle in figure 2 by counting the squares = 10 sq. cm

Area = 10 square cm

Length of rectangle = 5 cm

Breadth of rectangle = 2 cm

Area = 5 × 2 = 10 sq. cm

Hence, area of rectangle = length × breadth

A = l × b where, A is the area, l and b are length and breadth of a rectangle.

Let us find the area of a rectangle having length 5 cm and breadth 4 cm.

Area of Rectangle

7Save

From the above figure, it is clear that we can divide this rectangle into 20 squares of sides 1 cm each. So, the area = 20 cm2

Thus the area of the rectangle = 5 cm × 4 cm

= 20 cm2

So when we multiply its length and breadth we get the area of the rectangle.