maximum area

witlesswiz

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Jul 25, 2005
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If a police officer seals off the scene of a car collision using a roll of yellow police tape that is 260 feet long, what dimensions should be used to seal off the maximum rectangular area around the collision?
What is the maximum area?

Not sure what to..
p=2l+2w
260=2(100)+2(30) Is this correct?
Not sure where to get dimensions and maximum area
 
Area is length×width; but 2l+2w=260 or l=130-w.
So A(w)=(130-w)w=130w-w<SUP>2</SUP>.
What w makes A(w) a maximum?
 
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