For theta I found x to be root 200/3 or something like that. Then I considered that the curved surface area of cone is equal to the area of the cut out sector they gave us. So I just found the max value of the the cone and then used the area of sector to find theta by equating the areas. I got like 5 radians I thinkPlease tell me someone got π/5 something for theta in q16. Also someone please tell me how to do the MC with the parabola dish thingy and the number of downloads one???