Xiao Ming s family plans to use 80 square floor tiles to lay a living room with an area of 20 square

Floor tiles with a side length of meters per square meter per piece.

20 Requires 580 floor tiles.

Each block: 20 80 = square meters.

Square metre. So the side length is meters.

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The area that needs to be installed on each floor; 20/80=1/4（M^2）

The floor tiles are square bar: so; Let the side length of the floor tile be A, A 2 = 1 4 A = 1 2 =

An area of a piece = 20 80 = meters.

Side length = meters.