Name: Basic Carpentry Coop Tech Morning/Afternoon Canarsie HS Campus Mr. Pross Finding Area and Perimeter What is the formula for perimeter and how is it applied in construction? 1. Perimeter: The perimeter of a rectangle is the distance around it. Therefore, the perimeter is the sum of all four sides. Perimeter is important when calculating estimates for materials needed for completing a job. Example: Before ordering baseboard trim, the must wrap around the entire room, the perimeter of a 12’ 12 ft x 18 ft room must be found. What is the perimeter of the room? 18’ What is the formula for perimeter? Write it below. _______________________ 1. This is the formula you will need to follow in order to calculate area. = 2 (12 ft + 18 ft) 2. Add the length and width in parentheses. The length plus the width represent halfway around the room. = 2 (30 ft) 3. Multiply the sum of the length and width by 2 to find the entire distance around. = 60 ft. Practice A client asked that you to install a new window. The framing though is too small and you need to demolish it and rebuild it. First you need to find the perimeter of the window. If this window measures 32 inches by 42 inches, what is the perimeter? Name: Basic Carpentry Coop Tech Morning/Afternoon Canarsie HS Campus Mr. Pross 2. Area: The area of a square is the surface included within a set of lines. In carpentry, this means the total space of a room or even a building. Area, like permiter, is an important mathematical formula for estimating material and cost in construction. Example: Before ordering the flooring for a house, we need to calculate the area of each individual room. 16’ 12 ft x 18 ft room must be found. What is the are of this 16 ft x 20 ft room? 20’ What is the formula for Area? Write it below. _______________________ 1. This is the formula you will need to follow in order to calculate area. = 16’ x 20’ 2. Multiply the length by the width. = 320 ft Practice You are asked by a client to rebuild the subfloor in their living room. Before ordering material, you must first find the area of the room. If this living room measures 18’ x 24’, what is the area? * Make sure to show all work. .