Use a piece of rectangular paper with an area of 282.6cm**2 to form a cylinder. The height of this cylinder is 10cm. What is the area of the bottom of this cylinder in cm**2.
用一张面积是282.6cm**2的长方形的纸，围成一个圆柱，这个圆柱的高是10cm，这个圆柱的底面积是多少cm**2．
<gadget id="calculator">282.6 / 10</gadget>
<output>28.26</output>

<gadget id="calculator">28.26 / 3.14 / 2</gadget>
<output>4.5</output>

<gadget id="calculator">4.5 ** 2</gadget>
<output>20.25</output>

<gadget id="calculator">3.14 * 20.25</gadget>
<output>63.585</output>

<result>63.585</result>