Question

The width of a rectangular plot is 5 m less than its length and its area is 84m^2​​

Answer 1

Answer:

Let the length (L) be is x

Breadth(B)=x−5

area=l×B

=(x)(x−5) =84

or

=x

2

−5x−84=0

Solve the equation,we have,

x=12 and x=−7

taking x=12 , we have

L=12 and B=12−5 =7

Perimeter =2(L+B)

=2(12+7)

=2(19)

=38m