الرجاء حل هذة المسألة

[magdy saad saleh]

بعد السلام
هى فبن نماذج الوزارة دى ؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟
الحل وقد يكون عالى على الطلاب شوية
by adding first and second we get
2width+ length +height = 30
from third relation put length +height= 18 we get
2width+ 18 = 30
2width = 12
width = 6cm
from first relation we get
its length + 6 = 16 cm
its length= 10
its height+ 10= 18 cm
its height= 8 cm
the volume = .................................................. .......