After cutting a cylinder with a height of 8 decimeters into an approximate cuboid with the same base, the surface area increases by 48 decimeters square. What is the volume of the cylinder?
把一个高为8分米的圆柱割拼成一个等底的近似长方体后，表面积增加了48平方分米，圆柱的体积是多少．
<gadget id="calculator">48 / 2 / 8</gadget>
<output>3</output>

<gadget id="calculator">3 * 3 * 3.14 * 8</gadget>
<output>226.08</output>

<result>226.08</result>