The height of a cylinder is 5 decimeters. After cutting into two smaller cylinders, the surface area increases by 56.52 decimeters square. What is the volume of the original cylinder?
一个圆柱的高是5分米，截成两个小圆柱体后表面积增加了56.52平方分米，求原来圆柱的体积是多少？
<gadget id="calculator">56.52 / 2</gadget>
<output>28.26</output>

<gadget id="calculator">28.26 * 5</gadget>
<output>141.3</output>

<result>141.3</result>