SOLUTION: the length of rectangle is three times its width.if perimeter of rectangle is 96 metres, find its area

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Question 696711: the length of rectangle is three times its width.if perimeter of rectangle is 96 metres, find its area
Answer by mouk(232) About Me  (Show Source):
You can put this solution on YOUR website!
Let W = width of rectangle


"the length of rectangle is three times its width"
then the length = 3W


"if perimeter of rectangle is 96 metres"
+perimeter+=+2%28length%2Bwidth%29+=+96%22+
+2%283W%2BW%29=96+
+2%284W%29=96+
+8W=96+
+W=12+

So the dimensions are:
width=12
length=36


"Find its area"
+Area=width%2Alength+=+12%2A36=432+