If the room is rectangular, the area is the product of its length and width.
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You can calculate the area of a rectangle by multiplying the length by width so assuming your room is a simple rectangle the area is 2.7 x 4.3 = 11.61m2
length x width = area
Area = length x width = square measurement of floor space area For example: A room 3 meters by 4 meters has an area of 12 square meters. (3 x 4) First of all you need to determine the shape of the room. If the room is L-shaped, or has a bay window, you will need to divide the room up into triangles, rectangles, trapezoids etc. Measure the size of each shape - in feet - and calculate the square footage using standard formulae. Finally sum the results.
Calculate the area to be covered. (A) Calculate the area per board or pack (B) Divide (B) into (A)
For simplicity sake, let's assume we have a 10 foot x 10 foot room with an 8 foot ceiling. The floor area is 10 multiplied by 10 to get 100 square feet. To get the volume multiply that by 8 and get 800 cubic feet.