Using basic geometry and area formula for calculation of length, Apply fencing on only 3 side , The answer is 109.54 feet.
A subfield of mathematics called geometry examines the dimensions, placements, angles, and sizes of objects.
A plane shape, as opposed to a square, with four straight sides and four right angles, particularly one with uneven neighboring sides.
Area of rectangle is:
A= l x b
area=750 square feet.
for attaining minimum area , these area must be fitted in square,
so, [tex]l = \sqrt {750}[/tex]
=27.38 feet
since, one side is taken by barn, l should be extended 4 times, 2 on 1 side and 2 on sides each.
Total length of fence = 4 * 27.38
= 109.54 feet
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