With this triangle find the value of x

Data:

Notice that we have five metric relations in the right triangle:
 
. b² = a*m
. a*h = b*c
. c² = a*n
. h²= m*n
. a² = b² + c² 
 
All of them are very useful in solving problems involving rectangular triangles.

Solving: (adopting: c² = an ) 

If your asking how much altogether for 12 performance the answer will be 98,496.