The volume V of the workbox can be calculated by the formula:
V=a*b*c where a is the length, b is the width and c is the height.
In our case a=5'', b=31/2'' and c=4''.
When we input the numbers in the formula we get:
V=5*(31/2)*4=310 in³
So the interior volume V of the workbox is V=310 in³.
