Answer: Choice A) 17.5 square feet
Work Shown:
L = length = 4 ft
W = width = 1.5 ft
H = height = 0.5 ft
S = surface area of rectangular prism
S = 2*(L*W + L*H + W*H)
S = 2*(4*1.5 + 4*0.5 + 1.5*0.5)
S = 17.5
The units for the surface are in square feet. This is because surface area is really the combination of all individual areas of each face.
