A cone with a base area of 6.28 square meters and a height of 3 meters is its volume in cubic meters.
一个圆锥底面积是6.28平方米，高3米，它的体积是多少立方米．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/3) * 6.28 * 3</gadget>
<output>6.28</output>

<result>6.28</result>