a) ? 2 ? ? = 49 b) ? 2 + ? ? ? 2 = 49 c) ? 2 + ? 2 ? ? 2 = 49 d)? 2 ? ? 2 ? ? 2 = 49 e) ? 2 + 2? 2 + ? 2 = 49 f) ? 2 + ? 2 ? ? = 497. Which of the given equations represent a cylinder surface? Whatkind of cylinder is it, and what axis is it parallel to? 8. Whatare the traces of the graph of equation (d) in the planes ? = 6, ?= 7 and ? = 8? (Give equations in ? and ?, and name the 2D shapes.)What kind of 3D surface is the graph of equation (d)
