A certain barrel, which is a right circular cylinder, is filled to capacity with 300 gallons of oil. The first barrel is poured into a second barrel, also a right circular cylinder, which is empty. The second barrel is twice as tall as the first barrel and has twice the diameter of the first barrel. If all of the oil in the first barrel is poured into the second barrel, how much empty capacity, in gallons, is left in the second barrel?	Options.
A) There is no empty capacity B) 2100 gallons C) 2300 gallons D) 2100 gallons E) 2800 gallons
Radius of first cylinder=r, diameter=2r, height=h   Radius of second cylinder=2r, diamter=2d and height=2h   Volume of first cylinder=pie (r^2)*h=300   Volume of second cylinder=pie(2r^2)2h   Put the value of pie (r^2)*h=300 in the second cylinder,volume= pie (r^2)*4*2=300*8= 
<gadget id="calculator">300*8</gadget>
<output>2_400</output>
2400 gallons   Empty capacity=2100 gallons   Answer 2100 gallons
<result>D</result>
A certain barrel, which is a right circular cylinder, is filled to capacity with 300 gallons of oil. The first barrel is poured into a second barrel, also a right circular cylinder, which is empty. The second barrel is twice as tall as the first barrel and has twice the diameter of the first barrel. If all of the oil in the first barrel is poured into the second barrel, how much empty capacity, in gallons, is left in the second barrel?