If square room, then it 13.86 ft x 13.86 ft
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12 feet x 16 feet = 192 square feet
The answer is found by multiplying the length and the width. This calculation gives you 192 square feet.
238.6 square feet.
You have to multiply the two dimensions to get the area. In this case the answer will be 192 square feet. Divide by 9 to get 21.33 square yards.
First, find the square footage of a 6" x 36" plank. 6 x 36 = 216 square inches. There are 144 square inches in a square foot (12" x 12" = 144). So divide 216 by 144 to get the square feet per plank. 216 / 144 = 1.5 sq ft per plank. Your room is 16' x 12'. Multiply the two numbers to find square footage of the room: 16 x 12 = 192 square feet. You have 192 square feet, using planks that are 1.5 sq ft each. 192 / 1.5 = 128 planks. Generally, you will want to add from 5% to 10% for waste, depending on your layout (is it one big room, or several smaller rooms with lots of cutting?) (are you doing a straight layout, or diagonal?) and your skill level. If in doubt, add 10% to be safe. 128 planks + 10% --- that's 128 x 1.1 = 140.8 planks.