If a piece of cylindrical wood is cut into two small cylinders, its surface area will increase by 6.28 square centimeters; if it is split into two half cylinders along the diameter, the surface area will be increased by 40 square centimeters. Find the value of this cylindrical wood Surface area.
一段圆柱形木料，如果截成两段小圆柱，其表面积就会增加6.28平方厘米；如果沿着直径将其劈成两个半圆柱形，表面积将会增加40平方厘米，求这个圆柱形木料的表面积．
<gadget id="calculator">6.28 / 2</gadget>
<output>3.14</output>

<gadget id="calculator">6.28 / 2 / 6.28 / 2</gadget>
<output>0.25</output>

<gadget id="calculator">0.25 * 0.25 * 2</gadget>
<output>0.125</output>

<gadget id="calculator">40 / 2 / 0.125</gadget>
<output>160</output>

<gadget id="calculator">3.14 * 0.25 * 0.25 * 2 * 160</gadget>
<output>62.8</output>

<gadget id="calculator">62.8 + 6.28</gadget>
<output>69.08</output>

<result>69.08</result>