Question

the length of a rectangle is three times its breadth if the perimeter of the rectangle is 24 cm find its length and breadth

Answer 1

P= 2(l+b)
Let b= x
Therefore,l=3x x=24/8

Answer 2

Length=3breadth
Perimeter of rectangle =2(l+b)
= 2(3b+b)
=2(4b)=24
=4b=24/2=12
=4b=12
=b=12/4=3
L=3b=3(3)=9