If a cone is submerged in water of a cylindrical measuring cup with a bottom of 30 cm2, the water level rises by 2 cm, what is the volume of the cone in cm2?
把一个圆锥浸没在底面是30平方厘米的圆柱形量杯的水中，水面上升了2厘米，这个圆锥的体积是多少平方厘米．
<gadget id="calculator">30 * 2</gadget>
<output>60</output>

<result>60</result>