YALL HAVE BEEN GETTING THESE WRONG LATELY SO PLZ HELP

Which statement explains how you could use coordinate geometry to prove that quadrilateral abcd is a parallelogram? -5 -4 -3 -2 -1 t 1 2 3 4 prove that all sides are congruent and have slopes that are opposite reciprocals prove that segments ad and ab are congruent and parallel prove that opposite sides are congruent and have equal slopes prove that segments bc and cd are congruent and parallel

What is the total surface area of this square pyramid?

Acircle has a circumference of 7.850 units. what is its radius?