Math CentralQuandaries & Queries


Question from Hannah:

how many feet of fence needed to fence a square 2.5 acres??

Hi Hannah,

I am a Mac user so I asked Siri how many square feet there are in an acre and the response was that 1 acre is 43,560 square feet. Hence 2.5 acres is $2.5 \times 43,560$ square feet. Since the region you have is a square, if its length is $L$ feet then its area is $L \times L$ square feet. Solve for $L.$


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