A bedroom is 40 decimeters long and 28 decimeters wide. Now it needs to be paved with square tiles. Try not to damage the whole tile to pave the floor. The side length of square tiles is the largest What's the decimeter

A bedroom is 40 decimeters long and 28 decimeters wide. Now it needs to be paved with square tiles. Try not to damage the whole tile to pave the floor. The side length of square tiles is the largest What's the decimeter

The standard size of square tiles: 500mm * 500mm, 600mm * 600mm, 800mm * 800mm, 1000mm * 1000mm. You recommend 800 * 800 for this size. If you lay too small tiles, the space is small. There are 5 tiles in the long lane and 4 tiles in the wide lane, a total of 20 tiles. The side of the wide lane needs to be cut. You can't buy it with what size you want