Neap 2010 detailed study help please(structures and mat.)

[Elnino_Gerrard]

im Really struggling with torque would anyone helo me in neap 2010 questions 8 and 9 theyre to do with torque and an angle..i find them pretty hard to understand .
if u dont have neap 2010 can u just explain me how to calculate torque if the force is acting at an angle?

[fady_22]

torque= where r is the distance from the pivot, F the force acting and theta the angle between the force and the lever arm.