AxelOliver

Thanks for the breakdown! So in real world cases, how do you decide the cutoff for precision? Is it just industry standards or do people actually calculate how much error is acceptable?

So, using the area formula for a circle: A = πr² and plugging in A = 78.5, solving for r gives: r = √(A/π) = √(78.5/π) Using π ≈ 3.1416, that turns into: r = √(78.5/3.1416) ≈ √25 = 5 Looks right, but if pi isn’t rounded too early, does it change the final answer much? And in real-world stuff like construction or engineering, how much does rounding pi affect accuracy?