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this new tank

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by sanju09 » Mon Mar 30, 2009 5:23 am
A cylinder tank with radius of the base 1 and height 2 is half full of water. If all the water is poured into another cylinder tank with height 1 and radius of the base 2, to what percent of its capacity will this new tank be filled?
A. 20%
B. 25%
C. 32%
D. 35%
E. 40%

OA B
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by moutar » Mon Mar 30, 2009 6:25 am
Volume of tank 1 = pi * 1^2 * 2 = 2pi
It's half full so vlume of water = pi

Volume of tank 2 = pi* 2^2 * 1 = 4pi

Part full = pi/4pi = 1/4 = 25

Answer B
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by rahul.s » Sat Jan 23, 2010 2:49 am
yeah, i used the same method

half of the volume of the 1st cylinder / volume of the 2nd cylinder = 1/4 = 25%

IMO, it's B
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