What is 7/20 as a simplified fraction

Asquare parking lot has 6,400 square meters what is the length in meters

Can someone me and plz do the problem

Three baby penguins and their father were sitting on an iceberg 0.50.50, point, 5 meters above the surface of the water. the father dove down 4.74.74, point, 7 meters from the iceberg into the water to catch dinner for his kids. what is the father penguin's position relative to the surface of the water?