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. a: retrospective b: prospective c: cross-sectional

The figures below are made out of circles, semicircles, quarter circles, and a square. find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations).

Asquare has a side that measures 11 units. what is the area of a circle with a circumference that equals the perimeter of the square? use 3.14 for π, and round your answer to the nearest hundredth. 1519.76 units2 379.94 units2 616.56 units2 154.14 units2

Which of the following can be used to explain a statement in a geometric proof?