What is the volume of a cone whose base radius is 7 cm and height is 12 cm?
圆锥的底面半径7厘米，高12厘米，它的体积多少立方厘米．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">7 ** 2</gadget>
<output>49</output>

<gadget id="calculator">(1/3) * 3.14 * 49 * 12</gadget>
<output>615.44</output>

<result>615.44</result>