A cylindrical steel bar is 1.5 meters long. After cutting into three small cylinders, the surface area increases by 100.48 square centimeters. What is the volume of the original steel?
一个圆柱形钢材长为1.5米．截成3段小圆柱后，表面积增加100.48平方厘米，原来钢材的体积是多少？
<gadget id="calculator">100.48 / 4</gadget>
<output>25.12</output>

<gadget id="calculator">25.12 * 1.5 * 100</gadget>
<output>3_768</output>

<result>3_768</result>