Arithmetic Ability
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Q.

The length of a rope in meter by which a cow must be tethered in order that she may be able to graze an area of 2826 sq.m is ?

View Answer

Correct choice: B

Explanation:

The cow can graze an area of 2826 sq.m i.e it is able to cover area of circle of 2826 sq.m Therefore, πr2 =2826 r2 =(2826×7/22) = 899.18 = 900 r = 30 m. Therefore, the radius of the circle implies the length of the rope = 30 mts.
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