A cylinder whose base radius is 2 cm and height is 6 decimeters, if it is cut into three equal segments, how many square centimeters will its surface area increase?
一圆柱的底面半径是2厘米，高是6分米，如果将它截成三等段，其表面积增加了多少平方厘米．
<gadget id="calculator">3.14 * 2 * 2 * 4</gadget>
<output>50.24</output>

<result>50.24</result>