Abuilding casts a 21-ft shadow and a flagpole casts a 6-ft shadow. if the flagpole is 15 ft tall, how high is the building? round to the nearest tenth/

The solution to the problem is as follows:

We use proportion :

Let the height of building = x ft.

We get x/21 = 15/6

x = 15*21 /6

x = 52.5 ft.

height of bldg = 52.5 ft

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