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

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

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