Four horse are tethered of four corners of square plot of side 42m. So, that they just cannot reach one another. find the area left ungrazed.
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Step-by-step explanation:
The length of the rope in which the horses tied should be equal to half of the side of the
square plot so that they just cannot reach one another.
∴, the length of the rope is = 42/2
=21m
The area covered by each horse should be equal to the area of sector with radius of =42/2
=21(length of the rope).
Total area covered by the four horses =4× area of sector of radius 21metres
=Area of circle of radius 21 m.
Area left grazed by the horses = Area of square field − Area covered by four horses.
=(42)²− 22/7 ×21×21=1764−1386= 378sq.m
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