Cut a cylinder along a diameter perpendicular to the bottom surface, the surface area increases by 72cm**2, the cut surface is exactly a square, what is the surface area of the cylinder?
沿着一个圆柱的一条直径垂直于底面把它切开，表面积增加了72cm**2，切面正好是一个正方形，这个圆柱的表面积是多少．
<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>