my Galaxy tab 4 is OVER HEATING

[AC Question]

I have read the coments, My Tab get so HOT,...I MEAN "HOT!!!" That I am really afraid its going to chatch on fire,....I do not use it on line, I have some down loads on it like very short 2 min or 4 min vidio's that I use in my service work. Now it barley will last 45 min. what can I do??
KC