218.75 cubic feet or 8.1 cubic yards
A "yard of gravel" is a measure of volume, not a measure of area. There are 27 cubic feet (3x3x3 feet) in a yard of gravel, or one cubic yard.
The amount of gravel needed to cover 252 square feet depends on how thick (that is, deep) you want the gravel. If you want the gravel to be 3 inches thick... Convert the measurement to the same units. We'll use feet. 3 inches = 1/4 foot Multiply the thickness times the area to get volume in cubic measure. 1/4 feet x 252 feet = 63 cubic feet Gravel in the US is usually sold by the cubic yard, which is 27 cubic feet Thus, 63/27 = 2 1/3 cubic yards 2 1/3 cubic yards of gravel will cover 252 square feet of area to a dept of 3 inches.
9.26 cubic yards for every inch of depth.
92.593 cubic yards for every inch deep.
Plan on about 2.2 cubic yards (2.8 tons) of gravel.
You will need 20 cubic yards or 25.7 tons of gravel.
Knowing that 1 cubic foot is pretty much equal to 100 pounds or 0.05 ton, 1 ton of gravel is around 20 cubic feet.
12x75 x how deep you want it (expressed in decimal form) ie .5 for 6`` = cubic feet. Divide that answer by 27 and you have cubic yards and that is how you order it.
3000 sq ft * 4 inches = 1000 cubic feet.
486 cubic feet
The coverage area of 5 cubic feet of pea gravel will depend on the thickness at which it is spread. To determine this, you will need to know the desired depth of the pea gravel. You can calculate the square footage coverage by dividing the volume of the gravel (5 cubic feet) by the desired depth in feet.