PLEASE HELP ITS DUE IN 2 HOURS, I NEED THIS, WILL GIVE BRAINLIEST.

Hi, can anyone show me how to do this problem? 100 points for this. in advance

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?

The distance of a chord from the centre of a circle is 12cm and the lenght of the chord is 10cm. find the radius of the circle