Please hurry ( find the surface area and volume to the nearest whole number)

Identify the type of observational study described. a statistical analyst obtains data about ankle injuries by examining a hospital's records from the past 3 years. cross-sectional retrospective prospective

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?