If a cylindrical steel material with a length of 1 meter and a diameter of 2 decimeters at the bottom is cut into 2 sections, how many square decimeters is the surface area increased?
把一根长1米，底面直径2分米的圆柱形钢材截成2段，表面积增加了多少平方分米？
<gadget id="calculator">2 / 2</gadget>
<output>1</output>

<gadget id="calculator">1 ** 2</gadget>
<output>1</output>

<gadget id="calculator">3.14 * 1 * 2</gadget>
<output>6.28</output>

<result>6.28</result>