Core TradesCâu 130 / 700
A patio slab is 16 ft by 20 ft and 6 inches thick. Including a 10% allowance for waste and spillage, how much concrete should be ordered?
a.5.9 cubic yards
b.6.0 cubic yards
c.6.5 cubic yards
d.8.0 cubic yards
Giải thích
6 inches = 0.5 ft. Volume = 16 x 20 x 0.5 = 160 cubic feet = 160 / 27 = 5.93 cubic yards. Add 10%: 5.93 x 1.10 = 6.5 cubic yards. 5.9 ignores the waste allowance; the other values are too high or from mis-conversion.
Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
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