You can put this solution on YOUR website! (16)^(1/2)
This is a square root problem.
I would break down the (16) into its equal multipliers.
Sqrt16=sqrt(4*4)
Then factor the sqrt value=4 ans.
------------------------------.
Sq. root of 100
Again brakdown the 100 into it's 2 equal roots
Sqrt100=sqrt(10*10)
Then factor thesqrt value=10 ans.