Rectangular Room:  Measure the length and width of your room and multiply them together. For example if your room is 3 metres long by 3 meters wide, the total area will be 9 metres square as 3 x 3 = 9.

L Shaped Room: Split the room into rectangular sections as shown in the diagram. Multiply the length and width of both sections to find the area. Then, add the two areas together to find your total area.

More Complicated Room: Simply follow the method from the previous example by splitting your room into as many rectangles as required. Then multiply the length and width of each section and add them all together.