Jawabanmu

2014-03-30T20:34:20+07:00
20×20=400"400×300=120000"120000÷400=300 marmer
300 dr mn yg kali 400
itu diubah ke cm dulu gan
2014-03-30T20:35:18+07:00
L lantai= 4x3=12m2=120000cm L marmer = 20x20=400cm banyak marmer = 120000:400=300