Question

The walls of a storage building are built from stone. The stonework costs $5. 50 per square foot. The building is 12 feet by 15 feet and 10 feet tall. How much does it cost to build the storage building walls?.

Answer 1

Step-by-step explanation:

The area of the walls is equal to the sum of the areas of the four sides of the building. Each side has dimensions 10 feet (height) by 12 feet (width) or 10 feet (height) by 15 feet (length).

The area of each of the two 12 ft. by 10 ft. sides is:

12 ft. x 10 ft. = 120 sq. ft.

The area of each of the two 15 ft. by 10 ft. sides is:

15 ft. x 10 ft. = 150 sq. ft.

So, the total area of the four sides is:

2(120 sq. ft.) + 2(150 sq. ft.) = 540 sq. ft.

The cost of building the walls is therefore:

540 sq. ft. x $5.50/sq. ft. = $2,970.