There are 10 steps in front of the school library. Each step is 8 meters long, 0.5 meters wide and 0.3 meters high. The 10 step covers an area of (8×0.5× 10=40) square meters. To lay floor tiles on these steps, at least (8× 0.5×10+8× 0.3×10 = 40+24 = 64) square meters of floor tiles are needed.