After a cylinder is cut along the diameter and height of the base, the cut surface is a square with a side length of 6 cm. What is the surface area of the cylinder in square centimeters?
一个圆柱体沿底面直径和高切开后，切面是一个边长为6厘米的正方形，这个圆柱体的表面积是多少平方厘米？
<gadget id="calculator">3.14 * 6 * 6</gadget>
<output>113.04</output>

<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">3.14 * 9 * 2</gadget>
<output>56.52</output>

<gadget id="calculator">113.04 + 56.52</gadget>
<output>169.56</output>

<result>169.56</result>