[birbear]

there doesn't appear to be any genuine mathamaticians out there...

The correct answer (according to my trig and calc teachers)

radical sign pi

[AmishDude]

Hey! I'm a mathematician (at least I play one on TV).

Actually, the series I was thinking of gives (pi^2)/6. There really is no answer to "what is the square root of pi". The only interesting place that that number shows up is in the formula for the Bell Curve.

[BADJOE]

For all practical purposes Pi = 3.14

A closer practical number is 22/7 =3.1428571

Square root of 3.14 =1.772

Square root of 3.1428571 = 1.7728105

It would be unusual to need it any closer than either of the above.

[LibWhacker]

A+ for the only correct answer.

(pi)^1/2 is the correct answer and it's exact!

[Robert A Cook PE]

PI is NOT radical...... Conservative, perhaps, but not radical.

[BradyLS]

radical sign pi

Dammt radicals! They're at the root of everything!