A pyramid with aA CD is being used to store music. Each minute’s worth of recording takes up 12 megabytes. a) The CD contains nine tracks which are the following length (in minutes): 3, 5, 6, 4, 5, 2, 7, 8, 8. How much memory would these nine tracks occupy on the CD?

b) If the CD was downloaded to a computer and then all the tracks were put through an MP3 compression algorithm, how much memory would the nine tracks now occupy (you may assume a 90 per cent file reduction size)?

c) Find the average size of each of the MP3 tracks, and then estimate how many MP3 files could be stored on an 800 megabyte CD. base shape of hexagon's length of each sloping edges is 24cm and