A cylinder has a base diameter of 10 cm and a height of 24 cm. Now, if this cylinder is cut into three identical small cylinders, how many square centimeters does the sum of the surface areas of these three small cylinders increase from the surface area of the original cylinder?
一个圆柱的底面直径是10厘米，高24厘米，现在把这个圆柱截成3个完全相同的小圆柱，这三个小圆柱的表面积之和比原来圆柱的表面积增加了多少平方厘米？
<gadget id="calculator">10 / 2</gadget>
<output>5</output>

<gadget id="calculator">5 ** 2</gadget>
<output>25</output>

<gadget id="calculator">3.14 * 25 * 4</gadget>
<output>314</output>

<result>314</result>