Warren wrote:
Travis wrote:

A formula:

_L' x W' x D"_= cubic yard (s)
324


Feet times feet times inches equals cubic yards? Ummm. No.

I formatted that incorrectly.

_L'xW'xD"_= cubic yard/s
324

The formula I gave was not as an answer to the OP but just as a general
formula.

From:
http://www.tcmastergardener.org/html...in_area_s.html

How much mulch or soil is needed?

To determine how much mulch is needed for a specific area, measure the
area to be covered and use the following formula:

Area to cover (in square feet) x depth of mulch or soil desired (in
inches) x 0.0031 = cubic yards of mulch or soil required

-- or use this alternate method -- Area to cover (in square feet) x
depth of mulch or soil (in inches) / 324 = cubic yards of mulch or soil
required

For example, to cover an area of 100 square feet with 3 inches of mulch:
100 square feet x 3 inches deep x 0.0031 = 0.93 cubic yards needed

Note: If buying mulch in 1 cubic foot bags, multiply the cubic yards
needed by 27 (there are 27 cubic feet in 1 cubic yard) to find the
number of bags needed.


--

Travis in Shoreline (just North of Seattle) Washington
USDA Zone 8b
Sunset Zone 5