Question

the length of a rectangle is 20cm more than its breath. if the perimeter 100cm, find the dimension of the rectangle.

Answer 1

length=20+breath

perimeter2(l+b)=100

breath=x then

length =20+x then 2(2x+20)=100

2x=30

X=15 therefore length is 35 and breath is 15  

HOPE U GET IT....

Answer 2

dimension means volume
to find volume we need length ,breadth and height.
in question not given height