The volume v of a cylinder is V equals pir²H, where are is the radius of the cylinder and H is the height using rounding to the nearest whole number which of the following is an estimate of the volume of a cylinder with a radius of 3.75 in and a height of 6.21 inches.

(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.)