Trigonometry: The apparent size of a tall building 2 km away is 0.05 radians. What is the building's approximate height?

the answer was 100 m but I was just wondering how they got 100

1. what is the measure of ∠abc? what is the measure of ∠abd?

The solution set for 5v2 – 125 = 0 is

Mickey needs to cut pieces of ribbon that are each 1 meter long tie onto balloons. if he has 8 pieces of ribbon that are each 1 dekameter long. how many 1 meter pieces of ribbon can he cut