Question

Find the perimeter of a rectangle if its length and breadth is 3(x-y)and 2x-2y respectively

Answer 1

Perimeter=2(l+b)

=2(3x-3y+2x-2y)

=2(5x-5y)

=10x-10y

Thanks.

Answer 2

Perimeter = Length+Length+Breadth+Breadth

                = [3(x-y)] + [3(x-y)] + [2x-2y] + [2x-2y]

                = 3x - 3y + 3x - 3y + 2x - 2y + 2x - 2y

                = 3x + 3x + 2x + 2x - 3y - 3y - 2y - 2y

                = 10x - 10y

               = 10(x-y)