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The width of a rectangle is one half its length. The perimeter of the rectangle is 54 centimeters. What are the width and length of the rectangle?

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Dattaprabhakar G. | Expert Tutor for Stat and Math at all levelsExpert Tutor for Stat and Math at all le...
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let the width be W.  Then, reading the problem,  the length is 2W.  The perimeter, P, say,  is the sum of all sides. Hence P = W + 2W + W + 2W = 6W.  We are given that P = 54.  So 6W = 54. W = 54/6 = 9. The width is 9 cm.
Dattaprabhakar (Dr. G.)