# Four Horses are tethered at corners of a square plot of side 63 metres, so that they just cannot reach one another...

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Four Horses are tethered at four corners of a square plot of side 63 metres, so that they just cannot reach one another.
What is the area left ungrazed?

posted Jul 9, 2015

The ans is 850.5 sq.m

Area of square plot is 3969

Horses just cannot reach one another. So that the lenth of knot will be 31.5 m.

So that One horse can graze Quater of Circle with radius 31.5 m

thus 4 Horse can graze 4 * Quater of circle ==> circle of radius 31.5 =3118.5

3969-3118.5 = 850.5

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