Acylindrical pressure vessel has a height of 9 feet and a diameter of 6 feet. how much gas can the pressure vessel hold when full? a. 54π cubic feet b. 81π cubic feet c. 108π cubic feet d. 324π cubic feet

Sasha drank 8 bottles of water everyday for a week. how many bottles of water did she drink in total?

Will gve pints stars and brainliest

Afactory makes propeller drive shafts for ships. a quality assurance engineer at the factory needs to estimate the true mean length of the shafts. she randomly selects four drive shafts made at the factory, measures their lengths, and finds their sample mean to be 1000 mm. the lengths are known to follow a normal distribution whose standard deviation is 2 mm. calculate a 95% confidence interval for the true mean length of the shafts. input your answers for the margin of error, lower bound, and upper bound.