SOLUTION: WHAT IS THE LENGTH OF A RECTANGLE IF THE LENGTH IS TWICE ITS WIDTH WITH A PERIMETER OF 66 CENTIMETER?

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Question 273366: WHAT IS THE LENGTH OF A RECTANGLE IF THE LENGTH IS TWICE ITS WIDTH WITH A PERIMETER OF 66 CENTIMETER?
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
L=2W
2L+2W=66
2*2W+2W=66
4W+2W=66
6W=66
W=66/6
W=11 ANS. FOR THE WIDTH.
L=2*11=22 ANS. FOR THE LENGTH.
PROOF:
2*22+2*11=66
44+22=66
66=66