Answer :
16 ÷ 2 = 8
In this equation, you split 16 into 2 equal parts, which are 8 and 8.
The [tex]\sqrt{16}[/tex], however, is finding what number times itself makes 16. The answer is 4 in this case. 4 x 4 = 16
You get 2 different answers (2 and 4). They are two different operations.