The lateral expansion of a cylinder is a square. It is known that the base area of the cylinder is 10 square centimeters. What is the lateral area of the cylinder in square centimeters?
圆柱侧面展开是一个正方形，已知圆柱的底面积是10平方厘米，则圆柱的侧面积是多少平方厘米？
<gadget id="calculator">40 * 3.14</gadget>
<output>125.6</output>

<result>125.6</result>