Question

The area of rectangle having breadth 20 cm is 1200 cm2 . what is the perimeter of the rectangle.

Answer 1

may this will help u

Answer 2

The perimeter of a rectangle is 13 cm and its breadth is 2 3/4cm

let lenght be l

now  2 3/4

=> 11/4 cm

perimeter of rectangle = 2(l+b)

so ,

13 =  2(l+b)

13 =  2(l+11/4)

13 = 2l +11/2

13 - 11/2 = 2l

26-11/2 = 2l

15/2 = 2l

=>l= 15/2*2

=>l = 15/4cm 

hope it helps u