The shape is composed of squares and quarter circles. Select all the expressions that represent its perimeter. A
42+14π42+14\pi42+14π

B
7+7+7+7+7+7+3.5π+3.5π+3.5π+3.5π7+7+ 7+7+7+7+3.5\pi+3.5\pi+3.5\pi+3.5\pi 7+7+7+7+7+7+3.5π+3.5π+3.5π+3.5π

C
91+14π91+14\pi91+14π

D
147+49π147+49\pi147+49π

E
7+7+7+7+7+7+7+7+7+77+7+7+7+7+7+7+7+ 7+77+7+7+7+7+7+7+7+7+7

(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.)