Final answer:
With the dimensions of the building at 140 feet by 100 feet, the total area of the walls cannot be calculated without the height of the walls. The provided options do not align with the given dimensions, and key information is missing to make an accurate calculation.
Step-by-step explanation:
To calculate the total area of the walls that will be painted, we need to identify the dimensions of the walls of the building. The information given states that the actual dimensions of the building are 140 feet by 100 feet. Since we are interested in the area of the walls, we need to calculate the perimeter of the building and multiply it by the height. However, the height of the building is not provided, which makes it impossible to calculate the total area of the walls with the information given.
It should be noted that the options provided (a) 1000 square feet, (b) 1200 square feet, (c) 1400 square feet, and (d) 1600 square feet do not correspond to the information we have, which relates to the dimensions of the building (140 feet by 100 feet) rather than the area of its walls.
Therefore, without additional details, such as the height of the walls or whether these measurements refer to the total surface area to be painted (including possibly multiple walls), it is not possible to select one of these options. In practice, you would calculate the wall area by measuring the height of the walls, multiplying by the perimeter for buildings with a simple rectangular floor plan, then subtracting the area of windows and doors that won't be painted.