Cut a cylinder into the largest cone. If the circumference of the bottom of the cone is 12.56 cm and the height is 12 cm, what is the volume of the cut part?
把一个圆柱形削成一个最大圆锥，如果这个圆锥底面周长是12.56厘米，高是12厘米，那么削去部分体积是多少．
<gadget id="calculator">12.56 / 3.14 / 2</gadget>
<output>2</output>

<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">3.14 * 4 * 12 * (2/3)</gadget>
<output>100.48</output>

<result>100.48</result>