SOLUTION: Suppose that the length of a rectangle is three cm longer than twice the width and that the perimeter of the rectangle is 90 cm.
I need to find the length and width and show my wo
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I need to find the length and width and show my wo
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Question 338212: Suppose that the length of a rectangle is three cm longer than twice the width and that the perimeter of the rectangle is 90 cm.
I need to find the length and width and show my work. Answer by checkley77(12844) (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
L=28+3=31 ANS FOR THE LENGTH.
PROOF:
2*31+2*14=90
62+28=90
90=90
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