Three chords of length 15 cm, 41cm and 52 cm subtends angles A, B and C respectively at the centre of the circle such that C = A+B. What is the difference between the minor segment bound by chord of length 52cm and the sum of the other two minor segments?

1) 234 sq.cm
2) 308 sq.cm
3) 318.75 sq.cm
4) 328.12 sq,cm