SOLUTION: the length of a rectangle is 4 centimeters more than twice its width.If the perimeter of the rectangle is 86 centimeters,find the dimensions of the rectangle.

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Question 991449: the length of a rectangle is 4 centimeters more than twice its width.If the perimeter of the rectangle is 86 centimeters,find the dimensions of the rectangle.
Answer by Cromlix(4381) About Me  (Show Source):
You can put this solution on YOUR website!
Hi there,
Make Width = 'x'
Length = 4 + 2x
Perimeter = 2 x Width + 2 x Length
86 = 2(x) + 2(4 + 2x)
86 = 2x + 8 + 4x
Collect like terms:
2x + 4x = 86 - 8
6x = 78
x = 13
Width = 13 cm
Length = 30 cm
Hope this helps :-)