20 times 50 divided by three is 333 1/3
9.3 cubic yards of cement is required for this slab.
5 yds - One yard of concrete will cover approximately 81 square feet 4" deep.
106.67 Cubic Yards
20 feet x 20 ft x .3333 ft = 133.33 cubic feet / 27 cubic feet per yard = 4.94 cubic yards
0.246914 cu. yards (6.666667 cu. ft ) of concrete is needed.
That depends on how DEEP you want the concrete !
66.666 square yards
A dump truck load of 7.5 yards
20ft*4ft = 80 sq ft = 80/9 sq yards = 8.88... sq yards.
Cannot answer the question with out the depth dimension. If you are talking about square yards then 20x5 = 100 square feet, divided by 9 = 11.11 square yards,
15ft x 20ft= 5yards x 20/3yards 100/3 sq yards =33.3333333333 sq yards
20ft x 10ft x 7ft = 1400 cubic feet 1 yard of dirt = 27 cubic feet Hence yards required = 1400/27 = 51.85