// create a Box which will be used to create a Box let boxed Box < str > = Boxfrom ("hello");In a vertical box, you might use this method to force the box to be at least the specified width The invisible component has no height unless excess space is available, in which case it takes its share of available space, just like any other component that has no maximum heightA simple atmospheric dispersion model, called a box model can be used to calculate groundlevel concentrations of specific air pollutants of concern emitted from the projectactivity A box model is based on the assumption that pollutants emitted to the atmosphere are uniformly mixed in a volume, or "box" (Canter, 1985)
Common Core Multiplication Method
Box in box method