A cone has a volume of 1808.64 cubic inches and a height of 12 inches. What is its radius?

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.

Graph the equationy=x^2 -[tex]y = x^{2} - 2[/tex]

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)