A cylindrical piece of wood is cut into three sections. If the base area is 25 square centimeters, how much does the surface area of the wood increase by how many square centimeters?
一根圆柱形木料，把它截成三段，如果底面积是25平方厘米，这时木料的表面积增加多少平方厘米．
<gadget id="calculator">25 * 4</gadget>
<output>100</output>

<result>100</result>