If a cylinder with a height of 8 decimeters is divided into two identical cylinders, the sum of their surface areas is 25.12 decimeters2 larger than the original cylinder. What is the volume of the original cylinder?
把一个高8分米的圆柱体分割成两个一样的圆柱体，它们表面积的和比原来的圆柱体大25.12平方分米．原来的圆柱体的体积是多少？
<gadget id="calculator">25.12 / 2</gadget>
<output>12.56</output>

<gadget id="calculator">12.56 * 8</gadget>
<output>100.48</output>

<result>100.48</result>