The circumference of the bottom of a cone is 28.26dm, and the height is 5dm. What is its volume in dm**3.
一个圆锥的底面周长为28.26dm，高为5dm，它的体积是多少dm**3．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">28.26 / 3.14 / 2</gadget>
<output>4.5</output>

<gadget id="calculator">4.5 ** 2</gadget>
<output>20.25</output>

<gadget id="calculator">(1/3) * 3.14 * 20.25 * 5</gadget>
<output>105.975</output>

<result>105.975</result>