If a piece of cylindrical wood is cut into two small cylinders, its surface area will increase by 628 square centimeters. If it is split into two half cylinders along the diameter, its surface area will increase by 240 square centimeters. Find the surface area of this cylindrical wood ．
一段圆柱形木料，如果截成两个小圆柱，它的表面积就增加628平方厘米，如果沿着直径劈成两个半圆柱，它的表面积就增加240平方厘米，求这段圆柱形木料的表面积．
<gadget id="calculator">628 + 376.8</gadget>
<output>1_004.8</output>

<result>1_004.8</result>