The answer depends on whether the measurements which are given are in inches, feet, metres, etc. Without that information, any answer could well be seriously incorrect.
1800 cubic feet
10 × 12 × 15 = 1,800 cubic feet
47.7 cubic feet
144
27 cubic feet = 1 cubic yard60-ft x 120-ft x 12-in = 60-ft x 120-ft x 1-ft = 7,200 cubic feet = 2662/3cubic yards
About .0369 cubic yards. 20.5"x21"x4"=1722 cubic inches 1 Cubic yard of concrete is 27 cubic feet (9'x9'x9') 1 cubic foot of concrete is 1728 cubic inches (12"x12"x12") 1 cubic yard = 27 x 1728 = 46656 cubic inches 1722/46656 is approximately .0369 This would be a little less than two 80# bags of concrete mix
192 square feet.
47.7 cubic feet
1 foot = 12 inch 2.674 cubic feet = 2.674 x 12 x 12 x12 = 4620.672 cubic inches
A cubic foot of concrete weighs ABOUT 150 pounds. 4 feet by 12 feet by 4 feet is 192 cubic feet. If you meant 4 feet by 12 feet by 4 INCHES, that would be 16 cubic feet.
1 cubic yard = 9 cubic feet.4.5'*58'*12' = 3132 cubic feet3132/9 = 348 cubic yards
0.8 x12 =9.6inch Hence it is 9.6" x 9.6" x 9.6" cube 0.8 x12 =9.6inch Hence it is 9.6" x 9.6" x 9.6" cube
You say 12'x12 `—> that ' is the sign for feet. so if the patio is 12 feet by 12 feet then it is 144 square feet. You don't say what measurement the "4 thick" is, but I presume it is inches. 4 inches is 1/3 of a foot, so divide the square footage by 3 and that will give you the cubic footage - if the patio is 12 feet by 12 feet and 4 inches thick then the cubic footage is 48.
Multiplying, we get 1152 cubic feet. A cubic foot holds 7.47 gallons (to 3 significant digits), so the answer is about 8605 gallons.
If the question is 12"x12"x10" the answer .833 cu.ft
existing duct = velometer (Google velometer). Calculate velocity if volume is known and the size of duct volume (cubic feet) multiplied, square feet feet of duct, IE. 1000 cubic foot of air * 12" x12" square duct = 1000 cubic feet * 1sq. foot = 1000 feet per minute
A square foot is measured 12''x12'' x12''x12'', or a 12'' square.
That is 1440 Cubic feet which calculates to 10,772 gallons
144