A cylindrical tank of diameter 35 cm is full of water. If 11 litres of water is drawn off, the water level in the tank will drop by:  Pick one
A) 11 3/7cm	B) 11 2/7cm	C) 11 1/7cm	D) 11cm	E) None of these
Explanation:   Let the drop in the water level be h cm, then,   Volume of cylinder= πr2h   =&gt;22/7∗35/2∗35/2∗h=11000   =&gt;h=11000∗7∗4/ 22∗35∗35cm=80/7cm=11 3/7cm   Option 11 3/7cm
<result>A</result>
A cylindrical tank of diameter 35 cm is full of water. If 11 litres of water is drawn off, the water level in the tank will drop by: