Answer:
18
Step-by-step explanation:
54-36=18
36-24= 12
it is going down by multiples of six, so you would take 24 and subtract 6 and you will get 18
It looks as if "B" is the right angle so
AC is the hypotenuse
AB and BC are the legs
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.