400
I am making a blue and red pattern out of square foot tiles. My room is 12 by 14 feet. I want the center 6 by 7 feet to be blue. How much tile do I need for the outside red area?
What is 126 sq ft. I need 6x7 42 sq feet for blue. I need 12x14 = 168 sq feet for the entire floor. Subtract the blue from the entire room: 126-42=126 sq ft of red.