If a cylinder with a height of 8 decimeters is cut into two half cylinders along the diameter of its bottom surface, the surface area increases by 32 decimeters, what is the original volume of the cylinder?
把一个高8分米的圆柱，沿着它的底面直径切成两个半圆柱，表面积增加32平方分米，原来这个圆柱的体积是多少立方分米．
<gadget id="calculator">32 / 2 / 8 / 2</gadget>
<output>1</output>

<gadget id="calculator">1 ** 2</gadget>
<output>1</output>

<gadget id="calculator">3.14 * 1 * 8</gadget>
<output>25.12</output>

<result>25.12</result>