Please help, This is confusing. I'll mark brainiest

For what value of jn is mn parallel to kl

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

If you measured the width of a window in inches and then in feet with measurement would you have the greater number of units