If a cylinder is cut into 9 small cylinders, the sum of its surface areas is 180 cm2 larger than the sum of its surface areas obtained by cutting it into 6 small cylinders. What is the base area of the original cylinder?
一根圆柱，把它截成9个小圆柱所得的表面积总和，比截成6个小圆柱所得的表面积总和多180平方厘米，原来圆柱的底面积是多少平方厘米？
<gadget id="calculator">180 / 6</gadget>
<output>30</output>

<result>30</result>