If you were to find the price estimate flooring for a room, you would first find the square measurements of the room. This means you need to fine the area of the room in feet. For example, you have a perfect square room with two sides that equal 15 ft. You multiply those two sides so the estimate square footage of the room is 300 square feet.
Depending on the price of the flooring you want, you then multiply the cost of the flooring by 300 square feet to get a estimated price.
I hope this helps!