I didnt get the question quite right if its asking how high the ladder is its 10 ft if its asking about the wall its i think its 20 ft
The measure off DF is 11.
In a circle inscribed within a triangle, the distance from each vertex of the triangle to the two nearest touchpoints (points of tangency on the circle) are equal. Since SD=4, DT=4 as well. Since UF=7, then FT=7.
DF=DT+TF=4+7=11.
You have to times it by 100 - however much you want to decrease it by so your multiplier would 0.38
21 I think cause you use pemdas
