How about 7.9?
8
567
18 squared is 32419 squared is 36120 squared is 400
361 squares evenly to 19.
They are 324 and 361 which are both square numbers
Assuming the question is the wrong way round, and meant to read 'between 400 and 500', then 441 = 21 x 21 484 = 22 x 22 as there are many under 400 and an infinite number over 500.
There are two ways to solve this: Find the difference by subtracting the smaller number from the larger. 3600 - 400 = 3200 Divide the difference by two. 3200 / 2 = 1600 Add that quotient to the smaller number. 400 + 1600 = 2000 Secondly, the mid point is also the average (for most cases) 400+ 3600 = 4000 4000 / 2 = 2000
as i calculate it its 346, its the only cube number that's bigger than 200 but smaller than 400
it is 343
How about 8 cubed = 512
How about 73 = 343 or 63 = 216
try maths.com but otherwise its 36
Any number bigger than 7.37 and smaller than 8.43 will do that. There are an infinite number of them.
There are two integer answers : 6 and 7. Any value between 5.848 (cube root of 200) and 7.368 (cube root of 400) will satisfy the question.
If you start with 401, then the answer to 401^3 is sure to be bigger than 400.
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.
-- Any number between 5.849 and 7.368 can do that. -- If you only want whole numbers, then 6 and 7 are the ones.
93 = 729
500