A cylinder is 8 centimeters high. If its height increases by 2 centimeters, its surface area increases by 25.12 square centimeters. What is the original surface area of the cylinder in square centimeters?
一个圆柱高8厘米，如果它的高增加2厘米，那么它的表面积增加25.12平方厘米，求原来圆柱的表面积是多少平方厘米？
<gadget id="calculator">25.12 / 2 / 3.14 / 2</gadget>
<output>2</output>

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

<gadget id="calculator">3.14 * 4 * 2</gadget>
<output>25.12</output>

<gadget id="calculator">25.12 / 2</gadget>
<output>12.56</output>

<gadget id="calculator">12.56 * 8</gadget>
<output>100.48</output>

<gadget id="calculator">25.12 + 100.48</gadget>
<output>125.6</output>

<result>125.6</result>