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If the units are 30 ft x 30 ft x 4 inches, then you have 30 x 30 x 0.33 ft = 300 cubic feet
300 cubic ft/27 cu yds/cu ft = 11.1 cubic yards

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Wiki User

7y ago
This answer is:
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Joseph Rowland

Lvl 1
1y ago
What about footings I have 106 feet of footings 18 inches in depth.

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