Task: Question Answering
Input (English): Problem: 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 16 meters. what is value of the radius in meters ?
Options: a. 1 / 2, b. 1 / 3, c. 1 / 4, d. 1 / 6, e. 1 / 8
Output (English): c