Final answer:
The total cost of moulding for two windows and a door, not including the base of the door, is $38.22 after calculating the total length required and converting to feet based on the $0.98 per foot pricing.
Step-by-step explanation:
To calculate the total cost of the moulding for the windows and the door, we first need to compute the total length of moulding required. We will do this by calculating the perimeter of each window and the door, then adding them up. However, we do not install moulding along the base of the door, so we will subtract that length from the door's total.
Each window measures 110 cm by 65 cm, so the perimeter of one window is 2(110 cm + 65 cm) = 350 cm. Since there are two windows, we double this amount giving us 700 cm for both windows.
The door measures 76 cm by 198 cm, but since moulding is not required along the 76 cm base, we only need to add twice the side and top lengths: 2(198 cm) + 76 cm = 472 cm for the door's moulding.
Add the lengths for the windows and the door to find the total length of moulding needed: 700 cm + 472 cm = 1172 cm. Convert this into feet (since cost is per foot): 1172 cm ÷ 30.48 cm/ft = 38.45 ft. Now round up because you cannot buy a fraction of a foot of moulding. Therefore, you need 39 ft of moulding.
Finally, calculate the total cost: 39 ft × $0.98/ft = $38.22. Thus, the total cost of the moulding for the windows and door is $38.22.