Simplification the following equations

When the square of a natural number subtracted from its cube, the result is 48. Find the number: 

Which of the following is a perfect square as well as a cube ? 

If a 12 meter rod is cut into 25 equal pieces, what is the length of each piece?

The value of  is:

How many positive integers less than 1000 are multiples of 11 whose square roots are whole numbers

1008 divided by which single-digit number gives a perfect square?

The smallest number which should be added to the number 8958 so that the result is a perfect square is