It is known that the volume of a cone is 20 cubic centimeters, and the base area of a cylinder is equal to it. If the volume of the cylinder is 30 cubic centimeters and the area of the base remains unchanged, the height of the cylinder is the height of the cone ((())/( ())).
已知一个圆锥的体积是20立方厘米，一个圆柱的底面积和它相等，要使圆柱的体积是30立方厘米，底面积不变，则圆柱的高是圆锥高的((())/(()))．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>