SOLUTION: what is the formula for a rectangle with a perimeter of 54"? its width is 1/2 the legnth.

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Question 362308: what is the formula for a rectangle with a perimeter of 54"? its width is 1/2 the legnth.
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
W=L/2
2L+2W=54
2L+2(L/2)=54
2L+L=54
3L=54
L=54/3
L=18 ANS. FOR THE LENGTH.
W=18/2=9 ANS. FOR THE LENGTH.
PROOF:
2*9+2*18=54
18+36=54
54=54