Answer:
6sqrt6 = 14.69    sqrt14,69 = 3.83
closest divider to 4.12 as <4.5 TS <3.5 
Step-by-step explanation:
RS can be formed as a square so that = 12 can be used for other sides of that square to find the diagonal 
Where diagonal square = TS side
12^2 x 12^2 = sqrt 144 + sq rt 144 =  TS^2   
TS^2 = sq rt 288 = 16.9705627 = 17 
We then look at the choice answers  1, 2, 3, 4 
sq rt 16.97 = 4.12310563  sq rt 17 = 4.11 where 
2 sqrt 6 = 4.898989 so is incorrect.