A cylinder is 15 decimeters high and has a base area of 3.14 decimeters squared. If it is cut into two identical small cylinders, how many square decimeters will the surface area increase from the original?
一个圆柱体高15分米，底面积是3.14平方分米，把它截成两个完全一样的小圆柱体后，表面积比原来增加了多少平方分米
<gadget id="calculator">3.14 * 2</gadget>
<output>6.28</output>

<result>6.28</result>