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How many cubic yards are in a sidewalk that's 48in wide by 40ft long by 3.5 in thick?
Wiki User
∙ 12y ago
Convert 40 ft to inches , by multiplying by '12'
Hence 12 x 40 = 480 ins.
Multiply together the three numbers in inches
48 X 480 x 3.5 = 80640 cu. ins.
There are 36 x 36 x 36 = 46656 cu.ins in 1 cu.yds.
Hence
80640 cu. ins x 1 cu. yd / 46656 cu. ins = 1.72839 cu.yds.
lenpollock
Wiki User
∙ 12y ago1 cubic foot = 1,728 cubic inches
1 cubic yard = 27 cubic feet = 46,656 cubic inches
1 ft = 12 inches
40 ft = 480 inches
Volume of the walk = (48" x 480" x 3.5") = 80,640 cubic inches = 1.7284 cubic yard (rounded)
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