What is -8(j+6c-4y-5j+12)

I’m on question 7 it says a covered water tank is in the shape of a cylinder the tank has a 28 inch diameter and a height of 66 inches to the nearest square inch what is the surface area of the water tank

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.

Mis the midpoint of rq if rm equals 2x + 5 and mq equals 4x - 9 what is the length of rq