PLEASE HELP!!

Country I Population I Area (square km)

U. S. 272,648,000 9,364,520
Romania 22,609,000 237,391
Ghana 18,339,000 237,533

Which of these countries has the greatest population density? Which has the least? Provide an explanation and proof for your answer to receive full credit.

In the diagram below what is the approximate length of the minor arc ab

The weights of broilers (commercially raised chickens) are approximately normally distributed with mean 1387 grams and standard deviation 161 grams. what is the probability that a randomly selected broiler weighs more than 1,425 grams?

Find the volume of the solid whose base is the region bounded by f(x), g(x) and the x-axis on the interval [0, 1], and whose cross-sections perpendicular to the y-axis are squares. your work must show the integral, but you may use your calculator to evaluate it. give 3 decimal places for your answe