Whenever the board deems it necessary for the district to incur a bonded indebtedness, it shall by resolution set forth all of the following:
(a) A declaration of the necessity for the indebtedness.
(b) The purpose for which the proposed debt is to be incurred.
(c) The amount of the proposed debt.
(d) The time and place for a hearing by the board on the questions:
(1) Will the whole or only a portion of the district be benefited by the accomplishment of the purpose?
(2) If only a portion of the district will be benefited, what portion will be so benefited?