Two identical small cylinders can be assembled into a large cylinder with a height of 12 cm. The surface area of the assembled large cylinder is 25.12 cm**2 less than the surface area of the original two small cylinders. What is the surface area of the original small cylinder in centimeters* *2.
两个完全一样的小圆柱，能拼成一个高12cm的大圆柱，拼成的大圆柱的表面积比原来两个小圆柱的表面积少25.12厘米**2，原来一个小圆柱的表面积是多少厘米**2．
<gadget id="calculator">25.12 / 2</gadget>
<output>12.56</output>

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

<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<gadget id="calculator">3.14 * 2 * 2 * 6</gadget>
<output>75.36</output>

<gadget id="calculator">25.12 + 75.36</gadget>
<output>100.48</output>

<result>100.48</result>