Answer :
Final answer:
To calculate the lineal feet of forms needed for a footing that is 65 feet long, 20 inches wide, and 10 inches thick, convert the width to feet and calculate the perimeter where the forms will contact the footing, resulting in a total of 68.3333 lineal feet required.
Explanation:
The question asks how many lineal feet of forms are required to construct a continuous footing that is 65 feet long, 20 inches wide, and 10 inches thick. To calculate the lineal feet of forms needed, we need to consider the perimeter of the footing that will be in contact with the formwork. Since the forms will be on both sides of the footing's width, we multiply the width by 2. Then, we only have one length to consider, as the forms will go along the length of the footing only once. We need to convert inches to feet to ensure consistent units.
First, we convert the width from inches to feet: 20 inches = rac{20}{12} feet. Then,
[tex]2 \times 20 inches = 2 \times rac{20}{12} feet = rac{40}{12} feet.[/tex]
Next, we add the length of the footing to calculate the total lineal feet of forms required:
Total lineal feet = Length + 2 \times Width in feet = 65 feet + rac{40}{12} feet = 65 + 3.3333 feet = 68.3333 feet.
Therefore, 68.3333 lineal feet of forms are required to construct the footing.
