Giải dùm mình với. cảm ơn nhiều

How to do this , and can some one explain

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?

1yd 1 ft = 1 1/12 1 1/3 1 1/2 1 1/6