cuboid has a volume of 200 decimeters. If it is cut into 5 sections along the transverse direction, the surface area will increase by 160 decimeters. What is the length of the cuboid?
一个长方体，体积是200立方分米，若将它沿横截方向截成5段，表面积就增加160平方分米，这个长方体的长是多少分米．
<gadget id="calculator">160 / 8</gadget>
<output>20</output>

<gadget id="calculator">200 / 20</gadget>
<output>10</output>

<result>10</result>