The diagram shows a circle with center O and radius r cm. The points P, Q and R lie on the circle. The line PR is a diameter of the circle and angle POQ=2radians. The area of sector QOR is 30cm less than the area of sector POQ Find the value of r.

The cone in the diagram has the same height and base area as the prism. what is the ratio of the volume of the cone to the volume of the prism? h hl base area-b base area =b volume of cone_1 volume of prism 2 volume of cone 1 volume of prism 3 volume of cone 2 volume of prism 3 oc. od. volume of cone volume of prism e. volume of cone volume of prism 3 2