Răspunsuri

2014-05-14T08:47:21+03:00
A=6.4=24 m²=240000cm²
Aplaca=30.30=900 cm²
240 000:900=266,66 placi≈267 placi
267:80=3,33 ⇒266,66+3,33=270 placi
15 2 15