A cone has a base diameter of 3 meters and a height of 5 meters. What is its volume in cubic meters? How many.
一个圆锥体，底面直径3米，高5米，它的体积是多少立方米？多少．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">(3/2) ** 2</gadget>
<output>9/4 = around 2.25</output>

<gadget id="calculator">(1/3) * 3.14 * (9/4) * 5</gadget>
<output>11.775</output>

<result>11.775</result>