In 1990, 12.5% of the people in oregon did not have health insurance. if the population of oregon was 2,880,000, how many people were uninsured?

Acircular city park has a sidewalk directly through the middle that is 111 - feet long. if each bag of fertilizer covers 50 square feet, then determine how many bags of fertilizers the parks and recreation department needs to use to cover the circular park. ignore all the sidewalks around and through the park.

This is different from the first one can someone me

Asphere has a diameter of 10 in. what is the volume of the sphere?