SOLUTION: Can someone help me solve this question? The length of a rectangle is twice the width. The area is 48 square inches. What is the perimeter?

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Question 508723: Can someone help me solve this question?
The length of a rectangle is twice the width. The area is 48 square inches. What is the perimeter?
Answer by jerryguo41(197) About Me  (Show Source):
You can put this solution on YOUR website!
l=length
w=width
l=2w (length equals twice the width)
area
l%2Aw=48
plug in
l=2w
2w%2Aw=48
Solve
2w%5E2=48
Divide
w%5E2=24
Sqrt
w=sqrt%2824%29
Simplify
w=2sqrt%286%29
Solve for l
l=%282sqrt%286%29%29%2F2
l=sqrt%286%29
Perimeter
2l%2B2w
2%28sqrt%286%29%29%2B2%282sqrt%286%29%29
6sqrt%286%29