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.
Choose the most appropriate option.
A) A)25.4	B) B)26.7	C) C)24.3	D) D)22.5	E) of these
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 =&gt; R2 = (2244 X (7/22)) = 714=&gt; R = 26.72   Length of the rope = 26.72 m.   Answer: Option 26.7
<result>B</result>
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.