Hey, can anyone lend me a hand here? All I need is an explination as to how to do these.Or send me a website that can explain it. I can't figure it out. Thanks! :0D

5. If the diameter of the circle has endpoints at (-2, 4) and (3, 8), what is the length of the radius of the circle?

6. If the endpoints of the diameter of a circle are (-10, 12) and (12, 18), what are the coordinates of the center of the circle?