I have a question I picked on the internet, but I am not sure about the term truth-worthiness part of the question.
Find the product of 346.1 and 865.2. State how many figures of the result are trustworthy, given that the numbers are correct to four significant figures.
The product is 299445.72. Which becomes 299400(4 sig. fig).
In terms of how trustworthy, what are we looking at here? Since we have been restricted to the rule of 4 sig. fig, why is the answer not 299400?