Answer:
L=
Step-by-step explanation:
Given that:
....[1]
Since, this is the formula for Area of rectangle(A):
i.e
Area of rectangle(A) is given by

where, L is the length and W is the width of the rectangle respectively.
We have to find indicated variable (L):
Divide both sides by W we have;
; 
Simplify:

or

therefore, the value of L is, 