OpenStax, Contemporary Mathematics §9.2 Measuring Area · Example 7 · Arithmetic · Units & measurement
Measuring Area · Example 7
One side of a commercial building is 12 meters long by 9 meters high. There is a rolling door on this side of the building that is 4 meters wide by 3 meters high. You want to refinish the side of the building, but not the door, with aluminum siding. How many square meters of aluminum siding are required to cover this side of the building?
OpenStax, Contemporary Mathematics · §9.2 Measuring Area · Example 7
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