Question

Problemele 8 si 9.Dau coroană!

Answer 1

Răspuns:

Explicație pas cu pas:

8.

P = 24 cm

P = 2 x (AB + BC)

AB + BC = 24 cm : 2 = 12 cm

AB = 2BC

2BC + BC = 12 cm

3BC = 12 cm

BC = 12 cm : 3 = 4 cm

AB = 2 x 4 cm = 8 cm

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9.

P = 50 cm

P = 2 x (AB + BC)

AB + BC = 50 cm : 2 = 25 cm

AB = BC + 3 cm

BC + 3 cm + BC = 25 cm

2BC = 25 cm - 3 cm = 22 cm

BC = 22 cm : 2 = 11 cm

AB = 11 cm + 3 cm = 14 cm