Cutting a cylinder with a height of 6 decimeters into an approximate cuboid increases the surface area by 48 decimeters. What is the volume of the original cylinder in cubic decimeters?
把一个高6分米的圆柱切拼成近似的长方体，表面积比原来增加了48平方分米．原来圆柱的体积是多少立方分米．
<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">3.14 * 4 * 6</gadget>
<output>75.36</output>

<result>75.36</result>