A cuboidal container having length, breadth and volume as 16 m, 13 m and 2080 m3 respectively is completely filled with water. A rod which has the shape of cylinder is immersed completely into the container in 55 sec due to which water flows out at the rate of 7 m3 per sec through an outlet pipe present in the container. Find the radius of the rod, if height of the rod is same as the height of cuboidal container.

A cuboidal container having length, breadth and volume as 16 m, 13 m a

1.	A cuboidal container having length, breadth and volume as 16 m, 13 m and 2080 m3 respectively is completely filled with water. A rod which has the shape of cylinder is immersed completely into the container in 55 sec due to which water flows out at the rate of 7 m3 per sec through an outlet pipe present in the container. Find the radius of the rod, if height of the rod is same as the height of cuboidal container.
A.	5.6 m
B.	4.2 m
C.	3.5 m
D.	2.1 m
E.	None of these
Answer» D. 2.1 m

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