A full stationary oil tank that is a right circular cylinder has a radius of 100 feet and a height of 25 feet. Oil is pumped from the stationary tank to an oil truck that has a tank that is a right circular cylinder until the truck's tank is completely filled. If the truck's tank has a radius of 5 feet and a height of 12 feet, how far (in feet) did the oil level drop in the stationary tank?
Options.
A) 2.5 B) 0.025 C) 0.05 D) 0.03 E) 3
The volume of oil pumped to the tank = The volume of oil taken away from stationary cylinder.   pi*25*12 = pi*h*100*100 (h is distance that the oil level dropped)   h = 300/10,000 = 3/100= 
<gadget id="calculator">3/100</gadget>
<output>3/100 = around 0.03</output>
0.03 ft   The answer is 0.03.
<result>D</result>
A full stationary oil tank that is a right circular cylinder has a radius of 100 feet and a height of 25 feet. Oil is pumped from the stationary tank to an oil truck that has a tank that is a right circular cylinder until the truck's tank is completely filled. If the truck's tank has a radius of 5 feet and a height of 12 feet, how far (in feet) did the oil level drop in the stationary tank?