think / meditate / consider / expect / reflect / prepare / make up one's mind / imagine / contrive

multiple dimensions; many dimensions

(chiefly Internet slang) thinking with common sense

needed, necessary

need, necessity

question, problem on homework etc. / a question; a matter (of time etc.) / a problem (something that needs to be dealt with); a trouble / an issue; a matter

a target, a mark, a bullseye / an objective, an object (of doing something)

as far as ... is concerned; in terms of ...

multidimensional array

necessity (quality or state of being necessary, unavoidable, or absolutely requisite)