Question

URGENT TOATA PAGINA!!!VA ROG URGENT DAU FOLLOW SI COROANA AJUTATI MA CU TOATA PAGINA!!!!​

Answer 1

1)

1. Aflam lungimea:28×2=56m

2.Aflam perimetrul: l×2+L×2=28×2+56×2=56+112=168m

2)

1.Aflam latimea: 416:4=104m

2.Aflam perimetrul: l×2+L×2=416×2+104×2=832+208=1040m

3)

1.Aflam latimea: 84:4=21m

2.Aflam perimetrul : l×2+L×2=21×2+84×2=42 + 168= 210m

3.Aflam metri de sârmă : 210×3=630m

4)

1.Aflam semiperimetrul : 864:2=432m

L |------|------|------|} 432

l |------|

l=432:4=108m

L=108×3= 324m

Verificare: 108×2+324×2= 864