A cylinder, cut into two parts along the height and base diameter, can obtain two square sections with side length 8 cm. What is the surface area of this cylinder in square centimeters?
一个圆柱，沿着高和底面直径切成两部分，可以得到两个边长8厘米的正方形截面．这个圆柱的表面积是多少平方厘米？
<gadget id="calculator">3.14 * 8</gadget>
<output>25.12</output>

<gadget id="calculator">25.12 * 25.12</gadget>
<output>631.0144</output>

<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

<gadget id="calculator">3.14 * 16 * 2</gadget>
<output>100.48</output>

<gadget id="calculator">631.0144 + 100.48</gadget>
<output>731.4944</output>

<result>731.4944</result>