Answer:
103
Explanation:
To estimate a value you need to add 1 to the value each time a value after the value is above 5. For example the question above
102.831853072
Let's start from 2 the last number
Less than 5 so you won't be adding one to the number before it
It becomes 102.83185307
The next number is 7 it is greater than 5 so you add 1 to the number before it. Then it becomes
102.8318531. Continue like this till you get to 8 after the decimal point.
8 is above 5 so add to 102 making 103.