In this question, the round to the nearest whole changes depending on the value of pi considered.

for pi= 3.14 or 3.14159 you can round down to 628(628.31), but if you consider 22/7 you get 628.571 which is rounded up to 629.

What would be the right value to go for in a situation like this? is 3.14159 more accurate or 22/7 more accurate?