Therefore,answer is
12.57
(ii) 25.416kg
As we can see that at hundredth place it is 6, so , 1 will be incremented.
Therefore,answer is 25.42kg
(iii) 39.927m
As we can see that at hundreth place it is 7, so , 2 will be incremented.
Therefore , answer is 39.93m
(iv) 56.596m
As we can see that at hundreth place it is 6, so , 9 will be incremented.
Therefore , answer is 56.60m
(v)41.056m
As we can see that at hundredth place it is 6, so,5 will be incremented.
Therefore , answer is 41.06m
(vi) 729.943km
As we can see that at hundredth place it is 3, so , 4 will be not be changed.
Therefore , answer is 729.94km