Please Help This is Geometry!!!

I need help with number’s 8, 10, 12, 14, 16, 20, 22, 36, 38, & 40

Me ! write an equation for the interior angles of this triangle that uses the triangle sum theorem

You are making a battery for a science project. you have copper wire for your first electrode. you need to choose a conductor, a second electrode, and a device to plug into your battery. you have already chosen a lemon conductor. complete each statement below about the options that include a lemon conductor.

Brainlest answer can you find the area and circumference of a circle given the radius or diameter? if its yes or no explain why