I need one more square that’s not linked

How do you use the elimination method for this question? explain, because i really want to understand!

Plz hurry finals a paper cup in the shape of an inverted cone is 8 inches tall and has a radius of 1.5 inches. how much water can the cup hold? use 3.14 for pi. round the answer to the nearest tenth. a) 12.6 cubic in. b) 18.8 cubic in. c) 37.7 cubic in. d) 56.5 cubic in.

Given the net of the rectangular prism, what is its surface area?