A room ceiling is 24 ft by 36 ft and uses 2 ft by 4 ft acoustical tiles. How many full tiles cover the area before waste?
Correct Answer
A) 108 tiles
Ceiling area is 24 x 36 = 864 sq ft. Each tile covers 8 sq ft, so 864 / 8 = 108 tiles.
Why This Is the Correct Answer
Ceiling area is 24 x 36 = 864 sq ft. Each tile covers 8 sq ft, so 864 / 8 = 108 tiles.
Why the Other Options Are Wrong
Option B: 72 tiles
acoustical tile count, choice a: 72 tiles counts a different spacing, panel, or repeated member quantity.
Option C: 96 tiles
acoustical tile count, choice b: 96 tiles counts a different spacing, panel, or repeated member quantity.
Option D: 216 tiles
acoustical tile count, choice d: 216 tiles counts a different spacing, panel, or repeated member quantity.
Memory Technique
Remember acoustical tile count as "base, adjustment, final unit"; the last unit should read 108 tiles.
Reference Hint
Open Principles and Practices of Commercial Construction, 11th Ed., 2024; use by topic index - acoustical ceilings / paint / tile / resilient base to confirm that Ceiling area is 24 x 36 = 864 sq ft.
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