The side surface of a cylinder is expanded to form a square. It is known that the area of one of its bases is 6 square centimeters. What is the surface area of this cylinder in square centimeters?
一个圆柱的侧面展开后是一个正方形，已知它的一个底面的面积是6平方厘米，这个圆柱的表面积是多少平方厘米？
<gadget id="calculator">24 * 3.14</gadget>
<output>75.36</output>

<gadget id="calculator">10 + 75.36</gadget>
<output>85.36</output>

<result>85.36</result>