Segments AC and BD are diameters of circle O. Circle O is shown. Line segments A C and B D are diameters. Angle A O D is 73 degrees. What is the measure of Arc A D B? 107° 146° 253° 287° (I'll have guessed and skipped the question by the time I get an answer but at least other people can get help for this)

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.

Geometry - finding area of regular polygons and sectors (check my math, i can’t find the error)

Which situation is an example of an observational study?