A cylinder has a base diameter of 10 cm and a height of 8 cm. If its height is increased by 2 cm, its surface area will increase by how many square centimeters.
一个圆柱的底面直径是10厘米，高8厘米，如果把它的高增加2厘米，则表面积增加多少平方厘米．
<gadget id="calculator">3.14 * 10 * 2</gadget>
<output>62.8</output>

<result>62.8</result>