Answer:
The ceiling in Mitchell s bedroom measures 12 feet by 10 feet 11 inches. [ Total area of ceiling = 18864 inches^2. Solution: Length, L=12 ft = 12(12) = 144 inches ;Breadth, B=10 feet 11 inches=10(12)in+11in=131 inches; Total area of ceiling= L x B = 144 x 131=18864 inches^2. ]