Question

the length of the rectangle is 3cm more than its breadth. The perimeter of a rectangle is 30 cm.find its area.​

Answer 1

Answer:

222.75 cm

Step-by-step explanation:

Let the breadth be x centimetres.

•°• length = (x + 3) centimetres.

Perimeter = x + (x + 3) centimetres = x +x + 3 centimetres

= 2x+3 centimetres.

Given perimeter = 30 cm.

By the problem,

2x+3=30

⇒2x=30-3

⇒2x=27

⇒x=27/2

⇒x=13.5

•°• breadth = 13.5 cm

•°• length = (x + 3) centimetres = (13.5+3) cm = 16.5 cm.

•°• area of rectangle = 16.5cm × 13.5cm = 222.75 cm.

Ans: The area of the rectangle is 222.75 cm.