Question 324352
the rope is 10 m
tied at one end of a pole.
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It can move in the field maximum from one side of the square to the other taking a circular path.
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It can graze only an area of 1/4 of the area of a circle with radius 10m.

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Area of circle with radius 10 = pi*10^2
Area = 314 sq. m
1/4 of 314 = 78.5 sq. m