A cylindrical piece of wood has a base radius of 0.2 meters and a length of 2 meters. If it is sawed into two sections of the same length, the surface area will be increased by how many square meters compared to the original.
一根圆柱形木料的底面半径为0.2米，长是2米，将其锯成了同样长的两段，表面积比原来增加了多少平方米．
<gadget id="calculator">0.2 ** 2</gadget>
<output>0.04</output>

<gadget id="calculator">3.14 * 0.04 * 2</gadget>
<output>0.2512</output>

<result>0.2512</result>