A farmer has a triangular field with sides of 240 ft., 300 ft., and 360 ft. He wants to apply fertilizer to the field. If one 40-pound bag of fertilizer covers 6000 square feet, how many bags must he buy to cover the field.
I drew a diagram and have a feeling I need to use these equations
Law of Cosines
Area of a triangle (1/2 ab sinC)
I just don't know how I would go about it