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For a project in her Geometry class, Avery uses a mirror on the ground to measure the height of her school’s football goalpost. She walks a distance of 14.55 meters from the goalpost, then places a mirror on flat on the ground, marked with an X at the center. She then steps 1.3 meters to the other side of the mirror, until she can see the top of the goalpost clearly marked in the X. Her partner measures the distance from her eyes to the ground to be 1.45 meters. How tall is the goalpost? Round your answer to the nearest hundredth of a meter.

For A Project In Her Geometry Class Avery Uses A Mirror On The Ground To Measure The Height Of Her Schools Football Goalpost She Walks A Distance Of 1455 Meters class=

Sagot :

Answer:

2.22 m

Step-by-step explanation:

Suppose the heat of the goal is "h".

We can know:

1.35m/hm = 6.05m/9.95m

h ≈ 2.22

According to the principle of plane mirror reflection, the incidence angle is equal to the reflection angle; Triangle similiarity principle.