I disagree with Allison. The reason for this is because the square root of 46 is not a perfect square, making the equation irrational. 5.25 is rational because it terminates.
An example of a rational number would be √81. This would be rational because this is a perfect square; 81 / 9 = 9, so √81 = 9.
An example of an irrational number would be “7.2534910552…”. This number would be irrational because there’s no repeating pattern within the decimal and it doesn’t terminate.