As you gave no pic I took them on one lined
- F_1=3N
- F_2=10N
- F_3=3root 3 N
- F_4=6N
[tex]\\ \sf\longmapsto F_{net}=F_1+F_2\dots[/tex]
[tex]\\ \sf\longmapsto F_{net}=3+10+6+3\sqrt{3}[/tex]
[tex]\\ \sf\longmapsto F_{net}=19+3(1.732)[/tex]
[tex]\\ \sf\longmapsto F_{net}=19+5.196[/tex]
[tex]\\ \sf\longmapsto F_{net}=24.196N[/tex]
