Find the line integral of ∫ z² dx + y dy + 6y dz, where C consists of two parts, c₁ and c₂. c₁ is the intersection of cylinder x² + y² = 16 and plane z = 3 from (0, 4, 3) to (−4, 0, 3). c₂ is a line segment from (−4, 0, 3) to (0, 1, 5). (Round your answer to two decimal places.)