Answer:
Step-by-step explanation:
(147/7)x2
42 minutes of video game time
21.4 units
Greater angle: 180 - 80 = 100
diagonal² = 14² + 14² - 2(14)(14)cos(100)
diagonal² = 460.0700856454
diagonal = 21.4492444073
9.931 years
1 cd can hold 80 minutes
hope i helped :)