Question

How to simplify your answer when the formula is π * 64^2?
I get 12867.9635091 on the calculator, but I don't know how to simplify it.
Please explain. Thank you

Answer 1

Just round all the decimals up till you get to the whole number.

Answer 2

Often you are told how many decimal places to use.

12867.9635 rounds off to 12868, 12868.0, 12867.96, 12867.964 (and so on) to the nearest integer, nearest tenth, nearest hundredth, (and so on).