A cylindrical piece of wood with a length of 100 centimeters is cut into two pieces, and the surface area increases by 30 square centimeters. What is the volume of this piece of wood in cubic centimeters?
一根长100厘米的圆柱形木料，截成2段后，表面积增加了30平方厘米，这根木料的体积是多少立方厘米．
<gadget id="calculator">30 / 2</gadget>
<output>15</output>

<gadget id="calculator">15 * 100</gadget>
<output>1_500</output>

<result>1_500</result>