The circumference of a cylindrical bottom is 12.56dm, and the height is 9dm. If it is cut into a largest cone, what is the volume of the cone in dm**3.
一个圆柱底面周长是12.56dm，高9dm，把它削成一个最大的圆锥体，圆锥的体积是多少dm**3．
<gadget id="calculator">12.56 / 3.14 / 2</gadget>
<output>2</output>

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

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

<gadget id="calculator">3.14 * 4 * 9 * (1/3)</gadget>
<output>37.68</output>

<result>37.68</result>