Answer :
Answer:
321 feet long
Step-by-step explanation:
Both the flagpole and the building are expierencing the sun at the same angle of elevation from the ground
So calculate the angle of elevation from the ground...we use the flagpole's measurements
tan theta = 40/9.4
where theta is the angle of elevation...
theta = tan^-1(40/9.4) = 77°
So to calculate the height of the building...we use the angle
tan (77°) = height/47
Height = 47 tan (77°)
The height of the building = 321 feet long