The circumference of a conical base is 9.42 decimeters and the height is 5 decimeters. What is its volume in cubic decimeters?
一个圆锥形的底面周长是9.42分米，高是5分米，它的体积是多少立方分米．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">9.42 / 3.14 / 2</gadget>
<output>1.5</output>

<gadget id="calculator">1.5 ** 2</gadget>
<output>2.25</output>

<gadget id="calculator">(1/3) * 3.14 * 2.25 * 5</gadget>
<output>11.775</output>

<result>11.775</result>