Need help with finding approximate area of the rectangle

Scale: 
1/2 inch → 4 feet
1 inch → 4 x 2 = 8 feet

Convert each length into actual length:
Width = 1 5/8 in → 1 5/8 x 8 = 13 feet
Length  = 2 1/4 in→ 2 1/4 x 8 = 18 feet

Find Area:
Area = 13 x 18 = 235 ft²

Answer: 235 ft² (Answer D)