Answer:
Step-by-step explanation:
a). Perimeter of the kitchen = total length of all sides
                       = 4 + 2 + 2 + 6 + 6 + 12 + 10  (Since side of one smallest square = 2 feet)
                       = 42 ft
  Area of the kitchen = Area of the composite figure
                   = 4² + 2² + (6 × 12)
                   = 16 + 4 + 72
                   = 92 square feet
b). Perimeter of bedroom = 2(length + width)
                     = 2(12 + 8)
                     = 40 feet
  Area of the bedroom = Length × Width
                     = 12 × 8
                     = 96 square feet
c). Perimeter of the bathroom = 2(9 + 4) = 26 feet
  Area of the bathroom = 9 × 4 = 36 square feet
d). Perimeter of the closet = 2(6 + 8) = 28 feet
  Area of the closet = 6 × 8 = 48 square feet
e). Area of the hallway = Total area of the floor plan - area of the (kitchen + bathroom + bedroom + closet)
 Area of the floor plan = 20 × 20 = 400 square feet
 Area of the hallway = 400 - (92 + 96 + 36 + 48)
                  = 400 - 272
                  = 128 square feet
