The radius of the base of a cylinder is 3 cm and the height is 2 cm. What is the volume of the cone with the same height as the base?
一个圆柱的底面半径是3cm，高是2cm，与他等底等高的圆锥体积是多少．
<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">3.14 * 2 * 9 * (1/3)</gadget>
<output>18.84</output>

<result>18.84</result>