If a cylinder with a base diameter of 10 cm and a height of 1 meter is cut into four smaller cylinders, how much will the surface area increase in square centimeters?
一个底面直径为10厘米，高为1米的圆柱，如果把它截成四个小圆柱体，表面积增加多少平方厘米．
<gadget id="calculator">10 / 2</gadget>
<output>5</output>

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

<gadget id="calculator">3.14 * 25 * 6</gadget>
<output>471</output>

<result>471</result>