Final answer:
To find the area Carla needs to cover, calculate the area of the walkway and the patio separately, and then add them together.
Step-by-step explanation:
To find the area Carla needs to cover, we first calculate the area of the walkway and the patio separately, and then add them together. The walkway has a width of 4 feet, and since the length is not given, we can assume it is the same length as the patio. Therefore, the area of the walkway is 4 feet wide times the length of the patio. The patio measures 8 feet from top to bottom and 11 feet across, so its area is 8 feet times 11 feet. Adding these two areas together gives us the total area Carla needs to cover.
Area of walkway: 4 feet wide × length of patio
Area of patio: 8 feet × 11 feet
Total area: Area of walkway + Area of patio