Water is leaking out from a cylinder container at the rate of 0.31 m^3 per minute. After 10 minutes, the water level decreases 1/16 meters. What is value of the radius in meters? Choose the most appropriate option:  A) 1/4  B) 2  C) 4  D) 8  E) 12
10*0.31= 
<gadget id="calculator">10*0.31</gadget>
<output>3.1</output>
3.1= pi*R^2*h   R^2 = 3.1 / (pi*1/16) which is about 16   R = 4   The answer is 4.
<result>C</result>
Water is leaking out from a cylinder container at the rate of 0.31 m^3 per minute. After 10 minutes, the water level decreases 1/16 meters. What is value of the radius in meters?