A cylinder and a cone with the same base and height. It is known that the volume of the cone is 30 cubic centimeters. What is the volume of the cylinder in cubic centimeters?
等底等高的圆柱和圆锥，已知圆锥的体积是30立方厘米，圆柱的体积是多少立方厘米．
<gadget id="calculator">30 * 3</gadget>
<output>90</output>

<result>90</result>