There are two cylindrical buckets, A and B, the bottom radius of A bucket is 12 cm, and the bottom radius of B bucket is 16 cm. There is no water in bucket A, but there is water in bucket B and the height is 20 cm. Now pour part of the water in bucket B into bucket A so that the height of the water in buckets A and B is the same. How many cubic centimeters of water is in bucket A at this time?
有甲乙两只圆柱形水桶，甲水桶的底面半径是12厘米，乙水桶的底面半径是16厘米．甲水桶里没有水，乙水桶里有水且高度是20厘米．现在把乙水桶里的水倒一部分给甲水桶，使甲乙两只水桶里的水高度一样，求这时甲水桶里有水多少立方厘米？
<gadget id="calculator">3.14 * 12 * 12 * 12.8</gadget>
<output>5_787.648</output>

<result>5_787.648</result>