SOLUTION: the width of the rectangle is half its length. It has a perimeter of 42 m what is its length and width

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Question 606892: the width of the rectangle is half its length. It has a perimeter of 42 m what is its length and width
Answer by solver91311(16877) About Me  (Show Source):
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If a rectangle with perimeter has a length that is units longer (or shorter if ) than times the width, ,

Then knowing that the Perimeter is given by:

,

make the substitution:



Then solve for







For your problem: , , and . Do the arithmetic.

John

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