Răspuns :

Veronica2077id

A=L×l A=0.72 m²

a)L=2l

A=2l×l

0.72=2l²

l²=0.72÷2

l²=0.36 l=radical din 0.36

l=0.6 m

L=2×0.6=1.2 m

b)L=8l

8l×l=0.72 m²

8l²=0.72 m²

l²=0.72÷8=0.09

l=radical din 0.09

l=0.3 m

L=0.3×8

L=2.4 m

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