Is "apakah" needed at the start of the question because the answer will be either "yes" or "no"?
'apakah' is put at the beginning of a normal declarative sentence to change the statement into a yes/no question.
It's needed/preferred in the formal style.
'apakah' can be omitted, as long as the sentence has another intonation (in the informal speech), so that it's clear that it's a question and not a statement.
'Kamu sehat!' = You are healthy!
'Kamu sehat?' = You are healthy?
'Apakah kamu sehat?' = Are you healthy?
If you put 'apa' / 'apakah' at the beginning of the sentence, then there is no doubt that it is a question and not a statement.
Are you healthy is accepted why do we need not need to say apakah to designate it is a question ..i see the question mark but we would not say ..kamu sehat question mark when we speak so i would think if you spoke ..kamu sehat ..it would actually say ..you are healthy ..any ideas as to this