Answer:
significant of number 38.25 will be:
number 38.25 has 4 significant figure.
converting into in 3 significant figure we have to round off this number 38.25 to get 38.3 which have 3 significant figure.
converting into in 2 significant figure rounding off number 38.25 we get 38 which have 2 significant figure.
converting into in 1 significant figure converting number to 40 which have 1 significant figure.
