Let a circle \( C_{1} \) be obtained on rolling the circle \( x^{2}+y^{2}-4x-6y+11=0 \) upwards \( 4 \) units on the tangent \( T \) to it at the point \( (3,2) \). Let \( C_{2} \) be the image of \( C_{1} \) in \( T \). Let \( A \) and \( B \) be the center of circles \( C_{1} \) and \( C_{2} \) respectively, and \( M \) and \( N \) be respectively the feet of perpendiculars drawn from \( A \) and \( B \) on the \( x \)-axis. Then the area of trapezium \( AMNB \) is:
