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 8 feet and a height of 10 feet, how far (in feet) did the oil level drop in the stationary tank?	Choose the most appropriate option:  A) 0.008  B) 0.08  C) 0.064  D) 0.64  E) 6.4
The volume of oil pumped to the tank = The volume of oil taken away from stationary cylinder.   pi*64*10 = pi*h*100*100 (h is distance that the oil level dropped)   h = 640/10,000 = 64/1000= 
<gadget id="calculator">64/1000</gadget>
<output>8/125 = around 0.064</output>
0.064 ft   The answer is 0.064.
<result>C</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 8 feet and a height of 10 feet, how far (in feet) did the oil level drop in the stationary tank?