cylinder with a height of 6 cm is cut into two half cylinders from the diameter along the height, and the resulting surface area increases by 60 cm**2. What is the surface area of the original cylinder?
把一个高6cm的圆柱从直径处沿高剖成两个半圆柱，结果表面积增加了60cm**2，原来圆柱的表面积是多少．
<gadget id="calculator">60 / 2 / 6</gadget>
<output>5</output>

<gadget id="calculator">5 / 2</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">(5/2) ** 2</gadget>
<output>25/4 = around 6.25</output>

<gadget id="calculator">3.14 * (25/4) * 2</gadget>
<output>39.25</output>

<gadget id="calculator">3.14 * 5 * 6</gadget>
<output>94.2</output>

<gadget id="calculator">39.25 + 94.2</gadget>
<output>133.45</output>

<result>133.45</result>