how much mulch and topsoil
50 feet long, 12 feet wide and 4 inches deep, what is the yardage I will need delivered? for both items? thanks.

7.4 Yds
Length x width x depth / 12 / 27 = 
how much
I am real bad at math, what is the 12/27 for, I multiply 50x12x4=2400 can you be more specific? thanks

First part is used to figure out cubic feet 
LxWxD. In your case, 50x12x4". The first two are in feet, the latter in inches  this is what the 12 is for. After you get lxwxd 50x12x4 = 2400, you have to account for the fact that one of the measurements was given in INches. SO you divide by 12 inches. This gives you 200 cubic feet. Now to find cubic Yards, the measure you need for mulch, you divide by 27, the number of cu feet in a cu yard. You get 7.4. say BOTH the Width and Depth of your LxWxD measurements were given in inches. YOu would have 50' x 144" x 4". Then you would have 28,800. To accomodate for TWO measurements given in inches, you would divide by 12" (in one foot) for EACH of the measurements, so you would have 28,800 / 144 or (12x12). YOud still get 200 cu feet, then divide by 27 and get 7.4 cu yards. OR the alternative method... Go to google and type in "mulch calculator", follow links, enter LXWXD and it will do the rest. 
Couldn't of said it better myself...

Quote:
YOu already did say it "better"! I said it longer :laughing: 
Thanks for the explanation, this site is great.

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