On Tue, 12 Oct 2004 22:56:19 -0400, "Kyle Boatright"
wrote:

Gravel: 200 sq ft x .25 ft = 50 cubic feet. Divide the cubic feet by 27 to
get cubic yards. (About 2).

Sand: 200 sq ft x .17 ft = 34 cubic feet, or just over 1 cubic yard.
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Alo, if the sand or gravel will be compacted, don't forget to add a
fudge factor of +10% or so.