For a project in his Geometry class, Dominic uses a mirror on the ground to measure the height of his school's football goalpost. He walks a distance of 13.05 meters from
the goalpost, then places a mirror on flat on the ground, marked with an X at the
center. He then steps 7.25 meters to the other side of the mirror, until he can see the
top of the goalpost clearly marked in the X. His partner measures the distance from
his eyes to the ground to be 1.55 meters. How tall is the goalpost? Round your answer
to the nearest hundredth of a meter.
1.55 m
11
7.25 m
13.05 m

child does not get an education so she can use the molla on junk

cheater

step-by-step explanation:

898.1666667

step-by-step explanation:

5389/6 = 898.1666667

geometry: triangles

solvers

lessons

answers archive

call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

25.45584