A frustrum is cut from a cone. The radius of the bottom circle is double the radius of the top circle, and the height of the frustrum is h.
Write down the volume of the Frustrum in terms of r and h.
So I worked out that the height of the entire cone is 2h. Then when I work out the volumes of each cone I can’t seem to simplify when I subtract to work out the volume of the frustrum. Anyone got any ideas?