Simplify the expression the squareroot of 12

I'm just going to show my work:

The square root of 12
=( the square root of 3 )( the square root of 4 )
=(the square root of 3 )(2)
=2(square root of 3)

At a constant it will take one hour to travel 32 mi.at that speed it will take 1/2 hr to travel the remaining 16 mi.it will take 1+1/2 hr to travel the 48mi @ 32mph.so 1 hr = 60 min& 1/2 hr = 30 min1+1/2 hr = 90 min.there are 60s in each 90 × 60 = 3600 seconds.the real question seriously is he why are they driving so slow? ! lol.