Question 1:I attached a drawing I made to make things a bit clearer.
We can see a 30-60-90 right triangle with the length of the longer leg being 12 feet. Divide the longer leg by the square root of 3 and then multiply it by 2 to get our answer.
Since we need to round, we can use a calculator.

The hypotenuse's length is 14 ft. Thus, the 3rd choice is your answer.
Question 2:Plug in each value.




Your answer is the last choice. Hope this helps! :)