A cylinder with a height of 10 cm is divided and assembled into an approximate cuboid. The surface area increases by 40 cm2. What is the surface area of the original cylinder?
一个高10厘米的圆柱体被分割后拼成一个近似的长方体，表面积增加了40平方厘米，原来圆柱体的表面积是多少平方厘米？
<gadget id="calculator">40 / 2 / 10</gadget>
<output>2</output>

<gadget id="calculator">3.14 * 2 * 2 * 10</gadget>
<output>125.6</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>