There is a cylinder with a height of 8 units and a volume of 72 cubic units. What is the radius of the cylinder?

Math it's appreciated. (picture provided)

Find the values of the variables in the kite

If the angle bisectors of a pair of opposite angles of a quadrilateral are the opposite sides of a parallelogram formed by the two angle bisectors and two sides of the quadrilateral, is the quadrilateral always a parallelogram? explain your answer.