I am using a Casio s-v.p.a.m calculator to do the following sum :-

10 raised to the power of .5 ( 10 ^.5 ) I get the answer 3.16227766.

However, if I input 10 raised to the power of 1 half ( 10 ^ 1 (ab/c)2 )

I get the answer 5, why is this? can any one help?