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.
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
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
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.
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
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