If a cylinder with a height of 40 cm is cut into two sections, the surface area is increased by 50.24 cm2, what is the original volume of the cylinder in cubic centimeters?
把高为40厘米的圆柱体横截成两段，表面积增加50.24平方厘米，这个圆柱体原来的体积是多少立方厘米．
<gadget id="calculator">50.24 / 2</gadget>
<output>25.12</output>

<gadget id="calculator">25.12 * 40</gadget>
<output>1_004.8</output>

<result>1_004.8</result>