Hello, I need help with the answer of 3.14 from the picture, please.

From your graph of T2 vs. l, determine a value for g.

I am attaching both questions for 4 and 5 with the question in the image. thank you. NOTE : So the last person answered this question WITHOUT refencing the answer for whether question 4 or 5 answeres were given, so i am asking for question 5(or the answer for the question that was NOT solved because it was not referenced.) These were the following answers given to me from the last person on bartleby who answered my question without referencing whether it was the answer for question 4 or 5.  1 pass 2 fail 3 fail 4 pass

I need these three parts answered, if you are unable to answer all three parts please leave it for another tutor to answer, thank you.