A log with a length of 1 meter is now sawn into two pieces of the same length, and the surface area is increased by 56 square centimeters. What is the original volume of the log in cubic centimeters?
一根长1米的圆木，现将它锯成同样长短的两段，表面积增加了56平方厘米，这根圆木原来的体积是多少立方厘米．
<gadget id="calculator">56 / 2</gadget>
<output>28</output>

<gadget id="calculator">28 * 1 * 100</gadget>
<output>2_800</output>

<result>2_800</result>