The diameter of the base of the cylinder is 16 cm and the height is 30 cm. Find the volume of the cylinder.
圆柱的底面直径是16厘米，高是30厘米，求圆柱的体积．
<gadget id="calculator">16 / 2</gadget>
<output>8</output>

<gadget id="calculator">8 ** 2</gadget>
<output>64</output>

<gadget id="calculator">3.14 * 64 * 30</gadget>
<output>6_028.8</output>

<result>6_028.8</result>