After cutting a 5 decimeter long round steel into 4 sections, the total surface area increases by 113.04 square decimeters. Find the volume of the original round bar.
把一根长5分米的圆钢截成4段后，表面积的总和比原来增加了113.04平方分米．求原来的圆钢的体积．
<gadget id="calculator">113.04 / 6</gadget>
<output>18.84</output>

<gadget id="calculator">18.84 * 5</gadget>
<output>94.2</output>

<result>94.2</result>