The lateral area of a cylinder is 47.1cm**2, the volume is 94.2cm**3, find the area of the bottom of the cylinder.
一个圆柱的侧面积是47.1cm**2，体积是94.2cm**3，求这个圆柱底面积．
<gadget id="calculator">47.1 / 2</gadget>
<output>23.55</output>

<gadget id="calculator">94.2 / 23.55</gadget>
<output>4</output>

<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

<gadget id="calculator">3.14 * 16</gadget>
<output>50.24</output>

<result>50.24</result>