67.1517 cubic inches.
15 litres = 915.356161 cubic inches
15 cubic inches = 0.00868 cubic feet.
18" x 8" x 15" = 2,160 cubic inches = 1.25 cubic feet
912 cubic inches is about 15 (14.945) liters.
1 cubic foot = 1,728 cubic inchesVolume = 10 x 12 x 15 = 1,800 cubic inches = 1.04167 cubic feet (rounded)
16 x 15 x 48 what? Inches? Centimeters?If the dimensions are in inches:16 inches X 15 inches x 48 inches = 11,520 cubic inches of water.One gallon of water equals 231 cubic inches.So 11,520 cubic inches / 231 cubic inches = 49.87, or approximately 50 US gallons.
A 14 inch diameter pipe has cross sectional area 154 sq ins, so 1 foot length = 12 inches will have volume 1848 cubic inches. 1 US gallon = 3.8 liters = 3800 cubic centimeters(cc). 1 cubic inch = 16.39 cc. So 1 US gallon = 231.85 cubic inches. So 1 foot of pipe will contain 1848/231.85 = 7.97 gallons, say 8 gallons.
15*15*15 = 3375 cubic inches.
231 cubic inches = 1 gallon1 cubic foot = 1,728 cubic inches = 7.48052 gallons (rounded)Volume = 15' x 10' x 3' = 450 cubic feet = 777,600 cubic inches = 3,366.234 gallons (rounded)
29 inches by 15 inches = 435 square inches = 435/144 square feet = 3.02 square feet. Multiplying the number of square feet by a 3rd dimension (thickness or depth, etc.) will give an answer in cubic feet. If the 29 inches by 15 inches object is 1 inch thick, it has a volume of approximately 0.252 cubic feet (3.02/12).
The volume of a cylinder is (pi) x (radius)2 x (length)The radius of the pipe is half of its diameter = 15 inchesVolume = (pi) x (15)2 x (716 x 12) cubic inches = 3,514.66 cubic feet = 130.17 cubic yardsThat's the volume of the pipe. Knowing nothing about concrete, I don't knowhow efficiently you can pack it into that volume. and I have to leave that stepup to you.
A chalkboard has a volume that would be 15 cubic inches.