A tile floor is 13 feet by 11 feet, with 12 percent waste. How many square feet should be ordered?
Correct Answer
A) 160.16 square feet.
The floor area is 143 square feet. With 12 percent waste, 143 x 1.12 = 160.16 square feet.
Why This Is the Correct Answer
The floor area is 143 square feet. With 12 percent waste, 143 x 1.12 = 160.16 square feet.
Why the Other Options Are Wrong
Option B: 143.00 square feet.
143.00 square feet. is below the supported result for tile quantity calculation; it likely omits allowance, conversion, coverage, or final round-up.
Option C: 154.40 square feet.
154.40 square feet. is below the supported result for tile quantity calculation; it likely omits allowance, conversion, coverage, or final round-up.
Option D: 171.60 square feet.
171.60 square feet. is above the supported result for tile quantity calculation; it likely double-counts allowance, uses the wrong unit, or rounds too early.
Memory Technique
Measure to floor, adjust for area, then let Ordering Bath set the finish line.
Reference Hint
Study anchor (closed-book): memorize Tile quantity calculation from CSLB B General Building Study Guide; California Building Code, Title. / CSLB B General Building Study Guide tile estimating; know the rule or calculation trigger without relying on exam-room lookup.
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