After a 1.5-meter-long cylindrical steel is cut into three sections, the surface area increases by 9.6 square decimeters compared to the original one. What is the original bottom area of the steel?
把一根长1.5米的圆柱形钢材截成三段后，表面积比原来增加9.6平方分米，这根钢材原来的底面积是多少平方分米？
<gadget id="calculator">9.6 / 4</gadget>
<output>2.4</output>

<result>2.4</result>