Question

Length of rectangle is twice of its breadth .Area is 120 , What is its length

Answer 1

area of rect.=length✖breath(let breath be a & length be 2a)
120=2a2
a2=120/2=60

Answer 2

If we take the breadth as a
th length would be 2a as given in the ques
then
l × b=120
2a × a=120
2a^2=120
a=15root2