Find the sum of r + s, when r= -14.1 and s = 18.3

What is the area of a pizza with a radius of 40 cm leave the answer in terms of π to find your exact answer 40π cm² 1600π cm² 800π cm² 80π cm² π=pi

Guys i really need or i have to stay late up night

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