Expand the side of a cylinder, exactly a square with a side length of 62.8 cm. What is the area of the base of this cylinder in square centimeters?
把一个圆柱的侧面展开，恰好是一个边长62.8厘米的正方形．这个圆柱体的底面积是多少平方厘米．
<gadget id="calculator">62.8 / 3.14 / 2</gadget>
<output>10</output>

<gadget id="calculator">10 ** 2</gadget>
<output>100</output>

<gadget id="calculator">3.14 * 100</gadget>
<output>314</output>

<result>314</result>