Please Help!! Determine the length of the radius of Circle O. This is from the Geometry Circles Unit. Please do not add links. Thank you so much for your help! I truly appreciate the time you have taken to help me!

Will mark determine whether the conjecture is true or false. give a counterexample for any false conjecture. given: points r, s, and t conjecture: r, s, and t are coplanar. a) false; the points do not have to be in a straight line. b) true c) false; the points to not have to form right angles. d) false; one point may not be between the other two.