A cylinder whose base diameter is 10 cm, if its height increases by 2 cm, how many square centimeters will its surface area increase?
一个底面直径是10厘米的圆柱，如果高增加2厘米，他的表面积将增加多少平方厘米？
<gadget id="calculator">3.14 * 10 * 2</gadget>
<output>62.8</output>

<result>62.8</result>