Question 4 1 pts Calculate the arc length of the curve y=In(cosa) from *=0 to =- You will need to use the following integration formula: sec x dx = In | seca + tan | + C. Show and explain your work. Upload Choose a FileQuestion 5 1 pts Find the area of the surface obtained by revolving the curve y=21!4_m , for 1 Em E 4. around the rut-axis. C) 2111' C) 56 '3T 3 14 0 '3T 3 03w Question 6 1 pts Find the area of the surface obtained by revolving the curve @= vy+1, for 1sys the y-axis. around O 3TT O 55 TT 6 O 37 - TT 6 O 37 - TT