tolong banget bantuin ya

[tex]fx=f3x-f2= 150 cos 45 - 50 \sqrt{2} \\ 150. \frac{1}{2} \sqrt{2} - 25 \sqrt{2} = 50 \sqrt{2} \\ fy = f3y - f2 = 150sin45 - 50 \sqrt{2} \\ 150. \frac{1}{2} \sqrt{2} - 50 \sqrt{2} \\ 50 \sqrt{2} \\ resultan \\ \sqrt{ {50 \sqrt{2} }^{2} + { 50\sqrt{2} }^{2} } \\ \sqrt{5000 + 5000} \\ r = 100n[/tex]

Maaf kalo salah, semoga membantu
#baru buka buku