39 degrees. All angles must add up to 180 and the two acute angles equal each other because of the type of triangle it is!
Total number of computers in sample = 72 + 112 + 711 = 895.
P(LQ) = 72/895 = 0.08
P(MQ) = 112/895 = 0.125
P(HQ) = 711/895 = 0.794
No because circumference is a whole different thing
