Question

exercițiul de mai jos va rog ​

Answer 1

Răspuns:

P patrat=4L

P=4√5 cm

Apatrat=L²

A=√5²=>A=5 cm²

____________

P triunghi=3L

P=3×2√3=>P=6√3 dm

A triunghi=(L²√3)/4

A=[(2√3)²×√³]/4=(12√3)/4=>A=3√3 dm²

Answer 2

1)a.Perimetru= 4L => P= 4radical5 cm ;Aria=L^2 =>A=radical5^2=>A=5 cm^2
b.Perimetru= 3L =>P=6radical3dm; Aria=(L^2rad3)/4=> A=3rad3 dm^2