This High School stadium contains a track that surrounds a soccer field the soccer field is 100 yards long and 70 yards wide 1. What Is the area of one of the semi circles

2. the school decided to cover the semi-circles with grass to create space for stretching and other activities how many square yards of grass will the school need to cover the entrance Circle

3. What is the distance around one of the semi circles at either end of the soccer feild

4. What is the distance around the inner lane of the track

Please help me with this I don't understand at all ​