SOLUTION: the length of a rectangle is 3 times the with . the perimeter is 96cm. Find the with and length.
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Question 789813: the length of a rectangle is 3 times the with . the perimeter is 96cm. Find the with and length.
Answer by waynest(281) (Show Source): You can put this solution on YOUR website!
l = 3w
P = 2l + 2w
96 = 2(3w) + 2w
96 = 6w + 2w
96 = 8w
96/8 = 8w/8
12 = w
check:
96 = 2(3(12)) + 2(12)
96 = 2(36) + 24
96 = 72 + 24
96 = 96
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