Answer:
Option A. 264 ft² ; 4 gallons
Step-by-step explanation:
Given question is incomplete; find the complete question in the attachment.
From the picture attached, 
Area of the barn to be painted = Area of the (rectangular base + Triangular top) - Area of the window
Area of the rectangular base = 12 × 18 
                                                 = 216 ft²
Area of the triangular top = 
                                           = 
                                           = 60 square feet
Area of the window = 3 ft × 4 ft
                                  = 12 ft²
Total area to be painted = 216 + 60 - 12 
                                          = 264 ft²
∵ 70 square feet of the barn is covered by the amount of paint = 1 gallon 
∴ 1 square feet will be covered by the amount =  gallons
 gallons
∴ 264 square feet will be painted by =  
 
                                                              = 3.77 gallons 
                                                              ≈ 4 gallons
Therefore, Option (A). 264 ft²; 4 gallons will be the answer.