Question 936089: The length of a rectangle is 7 cm longer than the width.if the perimeter is 62 cm,find the length.
Please help me!
Answer by jim_thompson5910(35256)   (Show Source):
You can put this solution on YOUR website! The length is 7 cm longer than the width, so L = W+7. We'll use the perimeter formula P = 2*(L+W) where the given perimeter is P = 62
P = 2*(L+W)
P = 2*(W+7+W) ... plug in L = W+7
62 = 2*(2W+7) ... plug in P = 62. Solve for W
62 = 4W + 14
62-14 = 4W
48 = 4W
4W = 48
W = 48/4
W = 12
Since W = 12, we can use this to find L
L = W+7
L = 12+7
L = 19
So the length is 19 cm.
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