How do u fix a radiator holes

I need to know how to fix my radiator hose they just fixed my alternator and now my radiator hose is out is that supposed to be like that I'll come that happen

Depends where the hole is (at the top, side or in the core) and the size of the hole. if the coolant is poring out you are just wasting money on a sealer ... if it's a slow leak get a good radiator sealer (Bars Leaks or equiv) at auto store ,,,, Mkes sure to replace the coolant with coolant ...not water