A cylindrical steel bar, 2 meters long, is cut into two sections, and the surface area increases by 10 square decimeters. What is the volume of this steel bar in cubic meters?
一根圆柱形钢条，长2米，把它横截成两段，表面积增加了10平方分米，这根钢条的体积是多少立方米．
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(1/10) / 2</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">(1/20) * 2</gadget>
<output>1/10 = around 0.1</output>

<result>1/10 = around 0.1</result>