hello is there anybody that can explain how to work out these questions, i would really appreciate it.

Q1. Find the area of this shape.

Q2. In Class A the mean average score in a French exam was 72%. In Class B the mean average score in a French exam was 84%. There are 30 students in Class A and 26 students in Class B.

Calculate the mean average score for the two classes combined. Give your answer to 3 significant figures.