A cone has a base area of 9 cm and a height of 10 cm, what is its volume in cm3.
一个圆锥的底面积是9cm，高10cm，它的体积是多少cm3．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/3) * 9 * 10</gadget>
<output>30</output>

<result>30</result>