Subject
Quantitative Aptitude
Topic
Areas & Volumes
The length of a rope to which a cow is tied, is increased from 19m to 30m. How much additional ground will it be able to graze? Assume that the cow is able to move on all sides with equal ease.
The length of a rope to which a cow is tied, is increased from 19m to 30m. How much additional ground will it be able to graze? Assume that the cow is able to move on all sides with equal ease.
ক)
1696 sq mখ)
1694 sq mগ)
1594 sq mঘ)
1756 sq mExplanation
Area of a circle = Pi * (radius)2, where Pi = (22/7) When the length of the rope is increased to 30 m, grazing area becomes = (22/7) * 302 sq m. Therefore, the additional area it could graze when length is increased from 19m to 30m = 22/7*(302- 192) sq m. It can be simplified as (22/7)*(30+ 19)(30 - 19)=(22/7)*49*11 = 1694 sq m.Related questions
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