Help anyone can help me do this question, I will mark brainlest.​

Four congruent circular holes with a diameter of 2 in. were punches out of a piece of paper. what is the area of the paper that is left ? use 3.14 for pi

If a || b and b | y, then ? a) x || y. b) x | a. c) a | y. d) a || y.

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?