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How many ones in 400?
The number one is repeated 140 if you count to 400
How much drywall is needed to cover 400 sq ft?
12.5 regular sized sheets will do it.
How many 4x8 sheets of plywood to cover 400 square feet?
4-ft x 8-ft = 32 square feet in each sheet400/32 = 121/2 sheets
What number can you cube that is smaller than 400 and bigger than 600?
There is no number that is both smaller than 400 and larger than 600 - if it is smaller than 400 then it must be smaller than 600 since 400 is smaller than 600, similarly if it is larger than 600 then it must be larger than 400 since 600 is larger than 400. Assuming you mean larger than 400 and smaller than 600, then there are 199 such whole numbers than you can cube: 401, 402, 403, ..., 599 can all be cubed, giving 64481201, 64964808, 65450827, ..., 214921799. I guess that the question you are really asking is: What number between 400 and 600 is a perfect cube? The answer is 8³ = 512.
What is 30 percent less than 400?
(1-0.30)*400 0.7*400 280 ■
