No. It's not a proper noun.
If you take 1 cubic foot and multiply it by 54.8 billion cubic feet, you will have 54.8 billion cubic feet. You can break it down into yards by dividing it by 3.
There is one cubic feet per cubic foot.
1 cubic foot = 0.0283168466 cubic meters
Since a foot has 12 inches, a cubic foot has 123 cubic inches, equal to 1728 cubic inches.Since a foot has 12 inches, a cubic foot has 123 cubic inches, equal to 1728 cubic inches.Since a foot has 12 inches, a cubic foot has 123 cubic inches, equal to 1728 cubic inches.Since a foot has 12 inches, a cubic foot has 123 cubic inches, equal to 1728 cubic inches.
144 cubic inches are in 1 cubic foot.
2000 cubic foot = 2000 (cubic foot) x 1728 (cubic inch/cubic foot) x 16.387 (cubic cm/cubic inch)x1/1000000(cubic meter/cubic cm) = 56.6337 cubic meter from the above answer we get: 25 cubic meters = 882.867 cubic foot
There are approximately 141.3 billion cubic feet in 4 billion cubic meters.
1 cubic meter ≈ 35.3146667 cubic foot
28,316.8466 cubic cm=1 cubic foot
1,728 cubic inches.
You only need to capitalize the word "billion" if it is the first word of the sentence...or if it is actually someone's name, or any other proper noun.
There are 1,728 cubic inches per cubic foot.