kak minta bantuannya dong pake carannya ya.... makasihh

L j OSR = 150 cm^2
< SOR = 100°
< POQ = 180° - 120° = 60°

L j OPQ = < POQ/< SOR × L j OSR
L j OPQ = 60°/100° × 150 cm^2
L j OPQ = 90 cm^2 (B)