A conical part has a base radius of 1.5 cm and a height of 3 cm. What is the volume of this part?
一个圆锥形的零件，底面半径是1.5厘米，高是3厘米，这个零件的体积是多少？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

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

<gadget id="calculator">3.14 * 2.25 * 3</gadget>
<output>21.195</output>

<gadget id="calculator">(1/3) * 21.195</gadget>
<output>7.065</output>

<result>7.065</result>