SOLUTION: The length of a rectangle is 3 times longer than its width. If the area of the rectangle is 24 square inches, then what is the perimeter of the rectangle?

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Question 918984: The length of a rectangle is 3 times longer than its width. If the area of the rectangle is 24 square inches, then what is the perimeter of the rectangle?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

     .

A = Lw

(3w)w = 24in^2  (Tossing out the negative solution for unit measure)

3w^2 = 24

w^2 = 8

w =  2√2in  and L = 6√2in L+=+3w

P = 2L + 2w = 16√2in