The perimeter of a teepee is 18.84 meters and the height is 3 meters. How many cubic meters is the space in the tent?
一个圆锥形帐篷底面周长是18.84米，高是3米，帐篷里空间是多少立方米．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">18.84 / 3.14 / 2</gadget>
<output>3</output>

<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">(1/3) * 3.14 * 9 * 3</gadget>
<output>28.26</output>

<result>28.26</result>