A cylindrical wood with a length of 1.5 meters, after sawing off a section of 4 decimeters along the cross section, the surface area is reduced by 0.5024 square meters, what is the original volume of the wood?
一根长1.5米的圆柱体木料，沿着横截面锯掉4分米长的一段后，表面积减少了0.5024平方米，这根木料原来的体积是多少．
<gadget id="calculator">0.5024 / 0.4</gadget>
<output>1.256</output>

<gadget id="calculator">1.256 / 3.14 / 2</gadget>
<output>0.2</output>

<gadget id="calculator">0.2 ** 2</gadget>
<output>0.04</output>

<gadget id="calculator">3.14 * 0.04 * 1.5</gadget>
<output>0.1884</output>

<result>0.1884</result>