The volume of a cone is 157 cubic decimeters and the radius of the base is 2 decimeters. What is the height of the cone?
一个圆锥的体积是157立方分米，底面半径是2分米，这个圆锥的高是多少分米．
<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">3.14 * 4</gadget>
<output>12.56</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">157 / 12.56 / (1/3)</gadget>
<output>37.5</output>

<result>37.5</result>