If a cylinder with a base circumference of 25.12 cm is cut into 5 smaller cylinders, how many square centimeters will the total surface area increase?
把一个底面周长是25.12厘米的圆柱，截成5个一样的小圆柱后，表面积共增加了多少平方厘米．
<gadget id="calculator">25.12 / 3.14 / 2</gadget>
<output>4</output>

<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

<gadget id="calculator">3.14 * 16</gadget>
<output>50.24</output>

<gadget id="calculator">50.24 * 8</gadget>
<output>401.92</output>

<result>401.92</result>