Iam a prime number between 30 and 40 what number am i

Can someone me with these two circle theorem questions asap?

The architect's side view drawing of a saltbox-style house shows a post that supports the roof ridge. the support post is 8 ft tall. the distance from the front of the house to the support post is less than the distance from the post to the back of the house. how far from the front of the house is the support post positioned?

What is the length of the midsegment of a trapezoid with bases of length 15 and 25 ?