A roofing estimate is organized in squares rather than square feet. In roofing measurement, how much roof area is one square?
Correct Answer
A) 100 sf
A roofing square is 100 square feet of roof area. Other choices confuse a square with a small sample area, one square yard conversion, or a bulk-roll coverage number.
Why This Is the Correct Answer
A roofing square is 100 square feet of roof area. Other choices confuse a square with a small sample area, one square yard conversion, or a bulk-roll coverage number.
Why the Other Options Are Wrong
Option B: 10 sf
The trap in B is 10 sf. That selection is wrong because 10 sf is a different published number than the cited Roofing units value; Roofing estimating units - squares supports 100 sf; One roofing square equals 100 square feet.
Option C: 144 sf
Choice C gives 144 sf. Its specific error: 144 sf is a different published number than the cited Roofing units value; Roofing estimating units - squares supports 100 sf. The accepted answer is 100 sf.
Option D: 1,000 sf
Choice D (1,000 sf) is rejected because 1,000 sf is a different published number than the cited Roofing units value; Roofing estimating units - squares supports 100 sf. The cited answer is 100 sf.
Memory Technique
Treat roofing units like a labeled shelf; only the matching condition belongs with 100 sf.
Reference Hint
Open Roofing Construction and Estimating, Atcheson, 1995/2022 reprint; use the index entry or section for "Roofing estimating units - squares" to confirm that A roofing square is 100 square feet of roof area.
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