Question

The perimeter of a rectangle is 40 m. Its length is four metres less than five times its breadth. Find the area of the rectangle​

Answer 1

Let, breadth of rectangle is x, then 5x−4 be the length of the rectangle.

Perimeter of rectangle =2(l+b)

⇒40=2(l+b)

⇒40=2(5x−4+x)

⇒40=12x−8

⇒12x=40+8

⇒12x=48

⇒x=

12

48

⇒x=4

Breadth =4 meters

Answer 2

Answer:

64

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