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

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

What should come in place of the question mark (?) in the following question?
19.5% of 524 = 50% of ?

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

(5.5)³-(4.5)³ is equal to : 

The value of $$ {5-[2+3(2-2× 2 +5)-5]÷5}\over {4×4÷4}of(4+4÷4 of 4)$$ is:

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

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