Question

The perimeter of rectangle is 85cm breadth is 45.find area

Answer 1

Correction in the question, perimeter of rectangle is 94 cm and breadth is 45 cm.Find it's area.


Solution :

We know that;

Perimeter of the rectangle = 2 ( l + b )

But,

Perimeter = 94 cm [Given]

⇒ 2 ( l + b ) = 94

⇒ 2 ( l + 45 ) = 94

⇒ 2l + 90 = 94

⇒ 2l = 94 - 90

⇒ 2l = 4

⇒ l = 4 / 2

⇒ l = 2 cm

Now,

Area of rectangle = ( l × b )

⇒ Area = ( 2 * 45 )

⇒ Area = 90 cm²

Hence, the area of the rectangle is 90 cm².