Show appropriate Significant Figures and units

Question 1 The figure shows a hollow metal sphere with inner radius 5.50 cm and outer radius 12.7 cm and a point charge at the center. The inner surface of the hollow sphere has a total charge of 2.90 nC and the outer surface has a total charge of -15.6 nC. Calculate the magnitude electric field a distance 19.0 cm from the center of the sphere. Answer Question 2 A very long charged conducting wire, of radius a = 6.00 cm, is enclosed by a concentric, conducting neutral hollow cylinder, as shown in the diagram above. The electric field is E, = 1.20x104 N/C at b= 9.00 cm from the center of the wire and in the direction shown. What is the magnitude of the electric field at point P, a distance of c= 21.0 cm from the center of the wire? Magnitude: Click "Submit Answer" below to submit both of your answers