The side view of a cylinder is a square with a side length of 25.12 cm. What is the area of the base of the cylinder in cm**2.
一个圆柱体的侧面展开图是边长25.12cm的正方形，那么这个圆柱的底面积是多少cm**2．
<gadget id="calculator">2 * 3.14</gadget>
<output>6.28</output>

<gadget id="calculator">25.12 / 6.28</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>