It sounds like you’ll need to know the square footage. If so, just divide the room into two rectangles, get the area for those rectangles (length x width, as you say), and then add those two areas together.

Bob is right; jr. high school geometry had a use after all :-d. The flooring people will figure out the amt of whateveryou need to order.

First of all, you measure appropriate futniture such as a chair. then taking a photo of the chair from I side and _ side respectively. you will imagine how you can arrange furniture.