Question

The perimeter of a rectangle is 13cm and it's width is 2(3/4)cm .Find it's length.​

Answer 1

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

let lenght be l

now  $2\frac{3}{4}$

=> 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