The primeter of a rectangle is 30 inches.If its lengthis three times its length,find the dimensions

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02-09-2016
Mathematics

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The primeter of a rectangle is 30 inches.If its lengthis three times its length,find the dimensions

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mpanderla95 mpanderla95 · Answer 1 · 2016-09-02T19:48:24+02:00

mpanderla95 mpanderla95

02-09-2016

Perimeter = 30 inches
Length = 3x
Width = X

P = 2L + 2W
30 = 2(3x) + 2(X)
30 = 6x + 2x
30 = 8x
30/8 = 8x/8
3 6/8 = 3 3/4 = X
X = 3.75 inches

The width is 3.75 inches and red length would be 3 times as much or 3(3.75) = 11.25 inches.

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