A cylindrical part with a height of 10cm, if it is cut down along one of its bottom diameters and cut into two parts of the same size, the surface area will increase by 80cm**2, then what is the original surface area of the cylinder in cm**2?
一个圆柱体零件，高10cm，如果沿着它的一条底面直径往下切，切成大小相同的两份，表面积增加80cm**2，那么原来这个圆柱体的表面积是多少cm**2？
<gadget id="calculator">80 / 2 / 10</gadget>
<output>4</output>

<gadget id="calculator">3.14 * 4 * 10</gadget>
<output>125.6</output>

<gadget id="calculator">4 / 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">125.6 + 25.12</gadget>
<output>150.72</output>

<result>150.72</result>