Planning & EstimatingCâu 593 / 700
A roof has 2,400 square feet of surface area. Adding 15 percent for waste, how many roofing squares should be ordered (1 square = 100 sq ft)?
a.28 squares
b.24 squares
c.27 squares
d.2,760 squares
Giải thích
Add waste: 2,400 x 1.15 = 2,760 sq ft. Divide by 100: 27.6 squares, round up to 28 (a). Option (b) ignores the waste factor. Option (c) rounds down instead of up. Option (d) leaves the answer in square feet.
Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
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