When a ferris wheel casts a 20-meter shadow ,a man 1.8 meters tall casts a 2.4-meter shadow. how tall is the ferris wheel

Determine the number of outcomes in the event. decide whether the event is a simple event or not. upper a computer is used to select randomly a number between 1 and 9 comma inclusive. event upper b is selecting a number greater than 4. event upper b has nothing outcome(s). is the event a simple event? (yes or no) because event upper b has (fewer than, exactly, more than) one outcome.

Im literally having a mental breakdown

52 cm radius = diameter = area = circumference = circumfer