Find the cylinders electric field strength inside the

Question

Question: A very long, uniformly charged cylinder has radius R and linear charge density λ.

Part A: Find the cylinder's electric field strength outside the cylinder, r⠥R. Give your answer as a multiple of λ/ε0. Express your answer in terms of some or all of the variables R, r, and the constant π.

Part B: Find the cylinder's electric field strength inside the cylinder, râ R. Give your answer as a multiple of λ/ε0. Express your answer in terms of some or all of the variables R, r, and the constant Ï€.