If the volume of a cylinder is 900cm**3, what is the volume of a cone with the same base and height equal to cm**3?
一个圆柱的体积是900cm**3，则和它等底等高圆锥的体积等于多少cm**3．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">900 * (1/3)</gadget>
<output>300</output>

<result>300</result>