A measured layout trial

In a fictional classroom project, a team prepares an A 4 portrait information sheet with a width of 210 mm. Its brief specifies 15 mm left and right margins, three equal text columns and two 6 mm gaps. A second part of the exercise requires a diagram of a real 800 mm-wide object drawn at 1:10. The team has not yet chosen letterforms or colors. One proposal adds a decorative label inside a margin; another proposes a larger heading without changing the column grid. No official examination rules or compulsory commercial print specification is supplied. The teacher asks for arithmetic, a clear statement of assumptions and a simple way to compare information hierarchy. The sheet is a fictional design model and its numerical constraints apply only to this exercise, not to every publication.