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Va rog dau coroana
am nevoie de raspuns​


Va Rog Dau Coroana Am Nevoie De Raspuns class=

Răspuns :

Răspuns:

a)

A=L×l

108=L×3/4×L

108=3L^2/4

3L^2=432

L^2=432÷3=144

L=12 m

108=12×l

l=108/12=9 m

b) P dreptunghi=2L+2l=24+18=42 m

P patrat=4l=42

l patrat=42÷4=42/4=21/2

c) A patrat=1/3×108=108/3=36 m^2

l patrat=6 m