(Dont ignore, PLEASE PLEASE help asap❗️) Find the area of the shaded region (show work)

31.82 cm^2
Step-by-step explanation:
angle of that sector=360°-180°-135°
=45°
now,
angle of sector/angle of circle=area of sector/area of circle
45/360=area/254.571
area of sector=254.571/8
therefore,area of sector=31.82 cm^2