Jasmine completely covered a square al using 54.2 ㎡ of wallpaper without any overlap. Which measurement is closest to the side length of this wall in meters? no bitly if you are trying too be funny ill report you and send you toxic coments

Thompson and thompson is a steel bolts manufacturing company. their current steel bolts have a mean diameter of 127 millimeters, and a variance of 36. if a random sample of 35 steel bolts is selected, what is the probability that the sample mean would differ from the population mean by greater than 0.5 millimeters? round your answer to four decimal places.