Question

The perimeter of a rectangle is equal to the perimeter of the square of side 15cm. if the side of the rectangle is 20 cm long, what is the breadth ?​

Answer 1

Answer:

Given

The perimeter of a rectangle is equal to the perimeter of the square of side 15cm. if the side of the rectangle is 20 cm long.

To find

Breadth of the rectangle

Solution

Side of square = 15 cm

Length of rectangle = 20 cm

★ Perimeter of a rectangle = Perimeter of square

°•° Perimeter of rectangle = l × b

°•° Perimeter of square = 4 × side

→ l × b = 4 × side

→ 20 × b = 4 × 15

→ 20b = 60

→ b = 60/20

→ b = 30

•°• Breadth of a rectangle = 30 cm

Verification :

(★) Perimeter of rectangle = perimeter of square

→ l × b = 4 × side

→ 20 × 30 = 4 × 15

→ 60 = 60

Hence verified

________________________________