3, but to 3 decimals it's 3.145
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2
2.35 is closest to 2 on the number line
-- Multiply (pi) by (diameter of circle)OR-- Multiply (pi) by (2 times radius of circle)-- Then round the product to the nearest whole number.
To the nearest whole number 1.049 is simply 1. 1 is the closest whole number less than 1.049 and 2 is the closest whole number more than 1.049. It's pretty obvious that it's much, much closer to 1 than to 2.
If you multiply or divide an irrational number - such as pi - by ANY rational number (except zero), you will ALWAYS get an irrational number.