12x21/18+29-11= 32
There are 9 CU FT in a yard....and if this is stated in feet, then take your measurement of 12x21 feet or 252 square feet times (7 inches/12 inches or .5833333 feet) to give you 147 Cubic feet , then divide by 9 CUFT/YD or 16.3333 Cu Yards....about two standard mixer loads
12 feet X 21 feet / 9 sq feet/sq yard = 28 sq yards
There are 7,025,356,800 sq feet in 12x21 square miles.
about 28
1x252, 2x126, 3x84, 4x63, 6x42, 7x36, 9x28, 12x21, 14x18,
12x21/18+29-11= 32
There are 9 CU FT in a yard....and if this is stated in feet, then take your measurement of 12x21 feet or 252 square feet times (7 inches/12 inches or .5833333 feet) to give you 147 Cubic feet , then divide by 9 CUFT/YD or 16.3333 Cu Yards....about two standard mixer loads
There are 12 inches in a foot. 12x21=252 inches Tip: Google will multiply numbers with a * between them 12*21=
12 feet X 21 feet / 9 sq feet/sq yard = 28 sq yards