6 more than 3 times a number n

Volume of a cylinder with a radius of 13 in and height of 30 in

Which questions would most a reader identify the author's purpose for writing? check all that apply. what type of text is this? what type of reviews did the book receive? how many copies of the book have been sold? what is the central idea? how does this text make one feel?

Iknow its nothing to do with education, but what type of thing should i wrote here? ? : ) its for mcdonald's btw.