To the length and width of 5 meters and 3 meters of the floor tiles, there are two specifications: 1. Side length of 40 cm square; 2. Side length of 50%

To the length and width of 5 meters and 3 meters of the floor tiles, there are two specifications: 1. Side length of 40 cm square; 2. Side length of 50%

Your question is not complete
5×3=15(m2)
0.4×0.4=0.16
0.5×0.5=0.25
15 △ 0.16 = 93.75 (piece)
15 △ 0.25 = 60 (pieces)
It's better to use 50cm instead of wasting