Can someone help please ?

Acircle has a diameter will endpoints of (-2,8) and (6, 4). what is the center of the circle

I'm marking the brainliest and it's 15 points

Math ! will give branliest at a car and truck dealership, the probability that a vehicle is white is 0.25 . the probability that it is a pick up truck is 0.15 . the or obability that it is a white pick up truck is 0.06 . what is the probability that the vehicle is white, given that the vehicle is a pickup truck . round your answer to two decimal places .