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help toate , 1 . 2 3 exerciții

Help Toate 1 2 3 Exerciții class=

Răspuns :

1)

L=2

l=2

î=2

cuburi albastre2×4=8

cuburi rosii 4×2=8

8+4=12

12+8=20

3)V=L×l×î

20×10×5=1000cm cubi

10×10×10=1000cm cubi

20×30×5=3000cm cubi

2)V=L×l×î

5×1×2=10cm cubi

3×3×2=18cm cubi.

2. 5×1×2=10; 3×2×3=18

3. 20 10 5 vol :1000

10 10 10 vol: 1000

30 20 5 vol: 3000