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Lv 5
? asked in Science & MathematicsMathematics · 10 years ago

find the least amount of fence needed?

The rectangular plot of ground containing 432ft^2 is to be fenced within a large plot.

Through graphing, approximate the dimensions of the plot that requires the least amount of fence.

i'm sure there is a way to solve this without graphing, but atm i dont understand how to solve it at all. any help is appreciated. :)

2 Answers

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  • Anonymous
    10 years ago
    Favorite Answer

    Take the square root of the total area, now make a square plot that has sides equal to that length (all four sides = 20.785').

    This is because the maximum area to parameter rectangle is a square. A circular plot containing 432 ft^2 would have the smallest area, but if you must stick to rectangles the square is the best bet. You can prove this graphically, using algebra or calculus.

  • SB
    Lv 6
    10 years ago

    Here is a solution to your problem...

    https://docs.google.com/viewer?a=v&pid=explorer&ch...

    Hope this helps

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