Final answer:
The square root of 2.25 is rational because it can be expressed as a fraction, specifically 3/2.
Step-by-step explanation:
The square root of 2.25 is rational.
A rational number is a number that can be expressed as a fraction, where the numerator and denominator are both integers and the denominator is not zero.
The square root of 2.25 is rational. The square root of 2.25 is 1.5, which can be expressed as the ratio of two integers (3/2). In general, a number is considered rational if it can be expressed as the quotient or fraction of two integers, where the denominator is not zero. Since 1.5 fits this criterion, it is a rational number.
In this case, the square root of 2.25 is 1.5, which can be expressed as the fraction 3/2.