An open rectangular box with volume 
has a square base.Express the surface area of the box as a function 
of the length 
of a side of the base.
Definitions:
Activity Index
A measure used to quantify the level of activity or engagement in a specific area, often used in various financial and operational analysis.
Flexible Budget
A budget that adjusts to different levels of activity, providing a useful comparison for actual costs incurred.
Budgeted Costs
Projected financial expenditures that a company expects to incur during a specified period in the future.
Static Budget
A fixed budget based on a specific level of activity and does not change with the actual level of activity.
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