Direction : What value should come in the place of question mark (?) in the following questions?

80% of 10% of 340 = ?

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

The simplified value of
$${{1\over 3}÷{1\over 3}×{1\over 3}\over{1\over 3}÷{1\over 3}of{1\over 3}}-{1\over 9}$$

What is the square root of 0.09 ?

Direction : What should come in place of the question (?) in the following question.

140% of 450 + 24% of 650 =?

The number, whose square is equal to the difference between the squares of 975 and 585, is: 

(5.5)³-(4.5)³ is equal to :