SOLUTION: A rectangle's length is seven centimeters more than its width. The rectangle's area is 78 square centimeters. What is its length?
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Question 606865: A rectangle's length is seven centimeters more than its width. The rectangle's area is 78 square centimeters. What is its length? Answer by richard1234(7193) (Show Source):
You can put this solution on YOUR website! For some of these area problems it helps to try factoring 78 before doing anything else. Since 78 = 6*13, and 13 = 6+7, we know right away this works. Therefore the length is 13 cm.
Or you can let L be the length, then L-7 is the width (since the length is 7 cm longer). Then L(L-7) = 78. Solve for L.
