Yards? 12
12
The formula I use is 15 tons = about 12 yards.
you multiply 12 x 40 x .333 and then divide it by 27 which will give you 5.92 or 6 yards of concrete
This cylinder will require 1.4 cubic yards of concrete (this assumes a length of 12' and a width of 2').
15X15X.33(4/12 there is 4 inches in a foot therefor 4" is .33 of a foot) equals 74.25 cf of concrete divide by 27 (three demensional object for yards) 2.75 Cubic Yards. if you try to order .75 cubic yards of concrete you will be laughed at, just order 3 cubic yards and make a entrance path. good luck.
151/9 cubic yards for every 12 inches thick
Just type this into Google,(350 *5/12 cu ft) to cu ydand get the answer of5.40123457 cu yd
1.78 cu. yds.
12 x 24 x.33 = 95.04 cf /27 = 3.52 cubic yards
To calculate the cubic yards of concrete needed for a slab measuring 12 feet by 28 feet by 4 inches, first convert the dimensions to feet. The volume in cubic feet is 12 × 28 × (4/12) = 112 cubic feet. Since there are 27 cubic feet in a cubic yard, divide 112 by 27. Thus, you need approximately 4.15 cubic yards of concrete.
12 square yards but don't buy that, you will get a square. instead, simply ask for 9 feet by 12 feet or 3 yards by 4 yards
12'x24' (288 square feet) = 32 square yards.