Three horses are tied at 3 corners of a triangular plot having sides 20 m, 30 m and 40 m
with ropes of 7 m length each. Find the area where the horses can graze.
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Let the area of ground grazed by the 3 horses be sectors of 7 cm radius each nd their central angle be x y n z
Now area of 3 sectors =(x/360×πr²+y/360×πr²+z/360×πr²)
=πr²(180/360) (bcos sum of all angles of a triangle is 180)
=22/7×7²(1/2)
=22×7(1/2)
=77 cm²
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