The volume of a cylinder is 47.1cm**3, the distance between the two bottoms is 15cm, what is the area of the bottom of this cylinder in cm**2.
一个圆柱的体积是47.1cm**3，两底之间的距离是15cm，这个圆柱的底面积是多少cm**2．
<gadget id="calculator">47.1 / 15</gadget>
<output>3.14</output>

<result>3.14</result>