Problem 5 - Magnitude and direction of resultant force by method of resolution/coplaner concurrent

Magnitude and direction of resultant force by method of resolution/Engineering Mechanics
Problem : A triangle ABC has its side AB = 40 mm along positive x-axis and side BC = 30 mm along positive y-axis. Three forces of 40 N, 50 N and 30 N act along the sides AB, BCand CA respectively. Determine magnitude of the resultant of such a system of forces.