A. Find the area of region R B. The region R is the base of a solid. Find the volume of the solid formed by cross sections perpendicular to the x-axis, given that the cross sections are equilateral triangles
C. Find the volume of the solid generated by revolving R about the horizontal line y = -3

Use the given degree of confidence and sample data to construct a confidence interval for the population mean mu . assume that the population has a normal distribution. a laboratory tested twelve chicken eggs and found that the mean amount of cholesterol was 185 milligrams with sequals 17.6 milligrams. a confidence interval of 173.8 mgless than muless than 196.2 mg is constructed for the true mean cholesterol content of all such eggs. it was assumed that the population has a normal distribution. what confidence level does this interval represent?