I think it is the square root of 5.
2 root 3 over 2, so square root of 3
15
The square root of 15 is simply root 15, since neither 3 nor 5, 15's only factors, have square roots.
2 root 3 over 3
It is: 3 times the square root of 15 or about 11.619 rounded to 3 decimal places
2 root 3 over 2, so square root of 3
square root (y) / Square root (3) root (y) / 1.73
The square root of 15 as a fraction is 3 113/129.
15
The square root of 15 is simply root 15, since neither 3 nor 5, 15's only factors, have square roots.
2 root 3 over 3
It is: 3 times the square root of 15 or about 11.619 rounded to 3 decimal places
5 times the square root of two over 3 times the square root of two equals 5/3
25
15
It is i/3 where i is the imaginary number which is the square root of -1.
8.056... (3 d.p.)