Four horses are be tethered at four concern of a square plot of side 63 meters, so that they just cannot reach one another. The area left ungrazed is?

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Area left ungrazed = [(63 x 63) - (4 x 1/4 x 22/7 x (63/2)2] m2 = (63 x 63 - (99 x 63)/2 ) m2 = 63 x (63 - 99/2) m2 = 850.5 m2

Four horses are be tethered at four concern of a square plot of side 63 meters, so that they just cannot reach one another. The area left ungrazed is?

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