In the diagram below, what is the approximate length of the minor arc AB? R
160
30 cm
c
A. 15.7 cm
B. 62.8 cm
C. 28.8 cm
D. 31.4 cm

Can someone pls ! pls answer all. no explanation needed..

Find the area of the triangle formed by the origin and the points of intersection of parabolas y=−3x^2+20 and y=x^2−16.

(b) suppose that consolidated power decides to use a level of significance of α = .05, and suppose a random sample of 100 temperature readings is obtained. if the sample mean of the 100 temperature readings is x⎯⎯ = 60.990, test h0 versus ha and determine whether the power plant should be shut down and the cooling system repaired. perform the hypothesis test by using a critical value and a p-value. assume σ = 5. (round your z to 2 decimal places and p-value to 4 decimal places.)