# SOLUTION: The length of a rectangle is 5 cm less than three times its width. If the perimeter is 70 cm, find the dimensions.

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 Click here to see ALL problems on test Question 552915: The length of a rectangle is 5 cm less than three times its width. If the perimeter is 70 cm, find the dimensions.Answer by Maths68(1474)   (Show Source): You can put this solution on YOUR website!Width = w=? Length = l=3w-5 Perimeter = p = 70 Perimeter of a Rectangle = length + length + width + width Perimeter of a Rectangle =2 length +2 width P = 2l +2 w 70=2(3w-5)+2w 70=6w-10+2w 70=8w-10 70+10=8w 80=8w 80/8=8w/8 10=w w=10 Dimensions ============ Width = w=10cm Length = l=3w-5=3(10)-5=30-5=25cm Perimeter = p = 70cm