HELP ME IM GONNA GET IN TROUBLE IF I FAIL I BEG YOU

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.

The center of the circumscribed circle lies on line segment and the longest side of the triangle is equal to the of the circle.

Can some one me with these questions