what are the values of a and b?

Question

1) a=9/2, b=15/2
2) a=15/2, b=9/2
3) a=16/3, b=15/2
4) a=9/2, b=13/2

Answer 1

I'm sorry, i don't know how to add in the diagram

Answer 2

We can't post diagrams here.