Quantitative Aptitude :: Area Problems And Answers

17. Find the length of a rope by which a cow must be tethered in order that it may be able to graze an area of 2244 sq. metres.

A. 25.4 B. 26.7
C. 24.3 D. 22.5
Answer & Explanation

Answer: Option B

Explanation:
Clearly, the cow will graze a circular field of area 2244 sq. metres and radius      
equal to the length of the rope.
Let the length of the rope be R metres.
Then, Π(R)2= 2244 => R2 = (2244 X (7/22)) = 714=> R = 26.72
Length of the rope = 26.72 m.


dr, v,indira said: (Tuesday March 08, 2016, 04:57 AM)  
very good problems
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