SOLUTION: Find the lenghth of a rectangle when the width is 2 inches shorter and the perimeter is 80. Set up the equation for the perimeter involving only (L)
and then sove the equation fo
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and then sove the equation fo
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Question 167691: Find the lenghth of a rectangle when the width is 2 inches shorter and the perimeter is 80. Set up the equation for the perimeter involving only (L)
and then sove the equation for the length and the width. Answer by checkley77(12844) (Show Source):
You can put this solution on YOUR website! W=L-2
2L+2W=80
2L+2(L-2)=80
2L+2L-4=80
4L=80+4
4L=84
L=84/4
L=21 ANSWER FOR THE LENGTH.
W=21-2
W=19 ANSWER FOR THE WIDTH.
PROOF:
2*21+2*19=80
42+38=80
80=80
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