The surface area of a cuboid is 48 decimeters, the area of the base is 16 decimeters, and the perimeter of the base is 20 decimeters. Find the volume of the cuboid.
一个长方体的表面积是48平方分米，底面的面积是16平方分米，底面的周长是20分米，求这个长方体的体积．
<gadget id="calculator">16 * 2</gadget>
<output>32</output>

<gadget id="calculator">48 - 32</gadget>
<output>16</output>

<gadget id="calculator">16 / 20</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">16 * (4/5)</gadget>
<output>64/5 = around 12.8</output>

<result>64/5 = around 12.8</result>