# SOLUTION: Suppose the length of a rectanle is 3cm longer than twice the width and that the peimeter is 90cm. Setup an equation for the perimeter involving only W the width. solve this equa

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 Question 227928: Suppose the length of a rectanle is 3cm longer than twice the width and that the peimeter is 90cm. Setup an equation for the perimeter involving only W the width. solve this equation algebraically to find length and find the width as well?Answer by checkley77(12569)   (Show Source): You can put this solution on YOUR website!L=2W+3 2L+2W=90 2(2W+3)+2W=90 4W+6+2W=90 6W=90-6 6W=84 W=84/6 W=14 ANS. FOR THE WIDTH. L=2*14+3=28+3=31 ANS. FOR THE LENGTH. PROOF: 2*31+2*14=90 62+28=90 90=90