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 1/9 meters. What is value of the radius in meters? Answers
A) 2
B) 3
C) 4
D) 6
E) 9
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*1/9) which is about 9   R = 3   The answer is 3.
<result>B</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 1/9 meters. What is value of the radius in meters?