A cuboid has a surface area of 72.64 square decimeters, a base area of 18.5 square decimeters, and a base perimeter of 19.8 decimeters. Find the volume of this cuboid.
一个长方体，表面积是72.64平方分米，底面的面积是18.5平方分米，底面的周长是19.8分米．求这个长方体的体积．
<gadget id="calculator">18.5 * 2</gadget>
<output>37</output>

<gadget id="calculator">72.64 - 37</gadget>
<output>35.64</output>

<gadget id="calculator">35.64 / 19.8</gadget>
<output>1.8</output>

<gadget id="calculator">18.5 * 1.8</gadget>
<output>33.3</output>

<result>33.3</result>