A central angle measuring 120° intercepts an arc in a circle whose radius is 6. What is the area of the sector of the circle formed by this central angle?

π
12 π
24 π
36 π

Ihonestly don’t understand this at all

An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.

An octagonal prism has jow many lateral faces?