A project has a building footprint of 4,800 square feet on a 1.2-acre lot. What is the building coverage percentage?
Correct Answer
A) 9.2%
First convert 1.2 acres to square feet: 1.2 × 43,560 = 52,272 sq ft. Then calculate coverage: (4,800 ÷ 52,272) × 100 = 9.2%.
Why This Is the Correct Answer
Building coverage percentage is calculated by dividing the building footprint area by the total lot area and multiplying by 100. The key is converting acres to square feet using the conversion factor of 43,560 square feet per acre. With 1.2 acres = 52,272 sq ft, the coverage is (4,800 ÷ 52,272) × 100 = 9.18%, which rounds to 9.2%.
Why the Other Options Are Wrong
Option B: 12.5%
This answer likely results from incorrectly using 1 acre = 40,000 sq ft instead of 43,560 sq ft, or making an error in the unit conversion process.
Option C: 15.8%
This percentage is too high and suggests an error in converting acres to square feet or in the division calculation, possibly using an incorrect lot size.
Option D: 18.3%
This answer is significantly higher than correct and indicates a major calculation error, likely in the acre-to-square-feet conversion or using wrong values entirely.
Memory Technique
Remember '43,560' as 'Four-Three-Five-Six-Zero' - think of it as counting up 4-3, then 5-6, then 0. Or remember 'An acre has 43,560 square feet - that's a lot of feet!'
Reference Hint
Florida Building Code, Chapter 5 - General Building Heights and Areas, or local zoning ordinances section covering lot coverage requirements
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