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tabletop

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by grandh01 » Thu Aug 30, 2012 10:18 pm
A rectangular tabletop consists of a
piece of laminated wood bordered by a thin
metal strip along its four edges. The surface
area of the tabletop is x square feet, and the
total length of the strip before it was
attached was x feet. If the tabletop is 3 feet
wide, what is its approximate length, in feet
?
(A) 12
(B) 10
(C) 9
(D) 8
(E) 6

OA is E
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by adthedaddy » Thu Aug 30, 2012 10:40 pm
Perimeter of rect = 2(l+b) = 2(l+3)
Area of rect = l*b = 3l

As both are equal=x ; comparing them gives -

2l+6 = 3l
l=6

Option: (E)
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by mohan514 » Fri Aug 31, 2012 9:32 am
and the
total length of the strip before it was
attached was x feet.


what does this implicate in the question..
its the width of the strip which is surrounding the table top

how do we correlate its dimensions to those of table top..
didn i understand the question or something is wrong
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