Use a piece of rectangular paper with a length of 18 cm and a width of 12 cm to form the largest cylinder. What is the volume of this cylinder in cubic centimeters? (The value of π is 3)
用一张长18厘米、宽12厘米的长方形纸围成一个最大的圆柱，这个圆柱的体积是多少立方厘米．(π的值取3)
<result>324</result>