A cylinder with a radius of 3 decimeters is cut along the radius of the bottom surface to form an approximate cuboid, and the surface area increases by 24 square decimeters. What is the volume of the assembled cuboid in cubic decimeters?
一个半径为3分米的圆柱，沿底面半径切割，拼成近似的长方体后，表面积增加24平方分米．拼成的长方体的体积是多少立方分米．
<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">24 / 2 / 3</gadget>
<output>4</output>

<gadget id="calculator">3.14 * 9 * 4</gadget>
<output>113.04</output>

<result>113.04</result>