A cone whose base radius is 10 decimeters and whose height is 30 decimeters, what is its volume? how many cubic decimeters
一个圆锥的底半径是10分米，高是30分米，它的体积是多少？多少立方分米
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">10 ** 2</gadget>
<output>100</output>

<gadget id="calculator">(1/3) * 3.14 * 100 * 30</gadget>
<output>3_140</output>

<result>3_140</result>