20,736144 is the square root of 144x144 = 20,736.
The answer is 6,336 (Six thousand, three hundred and thirty six) :) It is just 144x144
The least common multiple or LCM is 144. 20736 is 144x144 and this must be a common multiple as well. There are an infinite number of common multiples. We usually are most interested in the LCM.
First of all we have to convert the dimensions of roof in inches. 1 feet = 12 inches 12 feet = 144 inches Area of each tile = 4 x 4 inches2 Area of roof = 144 x 144 inches2 So, Number of tiles = Area of roof/Area of each tile = (144x144)/(4x4) = 1296.