tolong jawab .................

F₁ₓ = 4 N
F₁y = 4 N

F₂ₓ = 8 N
F₂y = 5

∑Fₓ = F₁ₓ + F₂ₓ = 4 + 8 = 12 N
∑Fy = F₁y + F₂y = 4 + 5 = 9 N

R = √(∑Fx)² + (∑Fy)²
R = √12² + 9²
R = √144 + 81
    = √225
    = 15 N ← jawab : C