A cylindrical bucket can hold up to 2π liters of water. The radius of this bucket is 10 cm. What is its height in cm? (The thickness of the bucket is ignored)
一个圆柱体的水桶最多能盛水2π升，这个水桶的半径是10厘米，它的高是多少厘米．(水桶的厚度忽略不计)
<result>20</result>