(i) √23
We know that on finding the square root of √23, we will not get an integer. Therefore, we conclude that 23 is an irrational number.
(ii) √225
We know that on finding the square root of √225, we get 15, which is an integer. Therefore, we conclude that 225 is a rational number.
(iii) √0.3796
We know that 0.3796 can be converted into p/q while, converting 0.3796 into p/q form, we get
0.3796 = 3796/10000 .
The rational number 3796/10000 can be converted into lowest fractions, to get 949/2500
We can observe that 0.3796 can be converted into a rational number. Therefore, we conclude that 0.3796 is a rational number.