What is the average speed of a walker who walks 500m in 400 seconds

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.

How do i multiply two digit numbers

With finding limits of multi variable !