A steel plate with a specific gravity of 512 lbsft3 is const

A steel plate (with a specific gravity of 512 lbs/ft3) is constructed to the dimensions shown below. The plate is connected to a wall by hinges located at points B and C. A cable is attached to the plate at point A, with the other end of the cable attached to a point on the z-axis where z = 4.00 ft. what is the tension in this cable?

sdfsfsadvdfv