Is 8+2=11 an open, true or false equation?

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.

Aline that intersects one of two parallel lines intersects the other also always sometimes never

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.