SOLUTION: The area of a rectangle is 30 square feet. Write the perimeter of this rectangle as a function of the length of one of its sides, x.

Algebra ->  Rectangles -> SOLUTION: The area of a rectangle is 30 square feet. Write the perimeter of this rectangle as a function of the length of one of its sides, x.      Log On


   

Question 623407: The area of a rectangle is 30 square feet. Write the perimeter of this rectangle as a function of the length of one of its sides, x.
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
A = LW

A = xy

y = A/x

y = 30/x

---------------------

P = 2L + 2W

P = 2x + 2y

P = 2x + 2(30/x)

P = 2x + 60/x


So the perimeter, in terms of x, is P = 2x + 60/x