If a cylindrical stick with a base radius of 2 decimeters and a height of 5 decimeters is divided into 5 cylinders with the same base area, how much is the surface area increased by how many square decimeters?
将一根底面半径为2分米，高为5分米的圆柱形木条，平均分成5个底面积相等的圆柱体，表面积增加了多少平方分米．
<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">3.14 * 4 * 8</gadget>
<output>100.48</output>

<result>100.48</result>