Is 1.41 a rational number

Answer 1

1.41 as a terminating decimal is a rational number as it can be expressed as one whole number over another: 1.41 = 141/100

All terminating decimals, or decimals that end in repeating digit(s) are rational numbers.

---------------------------------------------

If that is an approximation (rounded to 2 decimal places) of √2 = 1.41[421356...] then it irrational.

Answer 2

Yes. Any number that has a finite number of decimal digits (and many that don't) are rational.