Find the perimeter of the figure shown to the right because I always get 51 but my teacher says it’s wrong

14 pointslet x be the seats in the small van and y the seats in the large van. how many seats does the large van have? a company uses two vans to transport worker from a free parking lot to the workplace between 7: 00 and 9: 00a.m. one van has 9 more seats than the other. the smaller van makes two trips every morning while the larger one makes only one trip. the two vans can transport 69 people, maximum.how many seats does the larger van have?

This is about circle theorems. someone asap : (

The function show two sisters' savings account and the rate at which they plan to deposit money