Final answer:
To calculate the paintable area of a wall with windows, multiply the width and height of the wall to get its total area, and then subtract the total window area, which is the number of windows times the area of one window (6 square feet for a 2x3 window).
Step-by-step explanation:
To calculate the area of a wall that needs to be painted, taking into account the windows present, we begin by finding the total area of the wall. This is done by multiplying the wall's width and height. Then, we account for the windows by subtracting the total window area from the wall's total area.
The area of each window is given as 2 feet by 3 feet (6 square feet). Once we know the number of windows, we multiply the area of one window by the number of windows to find the total window area. This total area is then subtracted from the wall's area to give the actual paintable area of the wall.
Here's an example: if a wall is 10 feet wide and 8 feet high, with 2 windows, we calculate the wall area (10 ft × 8 ft = 80 sq ft) and the area for the windows (2 windows × 6 sq ft/window = 12 sq ft total). Then, subtract the window area from the wall area (80 sq ft - 12 sq ft = 68 sq ft). The paintable area is thus 68 square feet