Final answer:
The magnitude of the resultant force is 16.07 kN.
Step-by-step explanation:
The magnitude of the resultant force can be determined by finding the sum of the three given forces. Given that r = 5.74 kN, r = 5.03 kN, and r = 5.30 kN, the magnitude of the resultant force is:
Resultant force = r + r + r
Substituting the given values:
Resultant force = 5.74 kN + 5.03 kN + 5.30 kN
Resultant force = 16.07 kN