A school building is perpendicular to its shadow which measures 9 meters. The distance from the tip of the shadow to the tip of the building is 41 meters. How high is the school building?

Adolphin is swimming with her friend. the dolphin jumps to a height of 4.54.54, point, 5 meters above the surface of the water as her friend swims 9.89.89, point, 8 meters directly below her. what is the position of the dolphin's friend relative to the surface of the water? meters