Xiaofang's bedroom is 3.6m long and 2.8m wide. Now we need to lay square tiles. What is the maximum side length of square tiles? How many decimeters do we need

Xiaofang's bedroom is 3.6m long and 2.8m wide. Now we need to lay square tiles. What is the maximum side length of square tiles? How many decimeters do we need

3.6m=36dm
28m=28dm
The greatest common factor of 36 and 28 is 4
So the maximum side length is 4 decimeters
It needs (36 / 4) x (28 / 4) = 9x7 = 63 pieces
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