Acircle has an area of 98mm^2. find the circumference of the circle

Which undefined geometric term is described as a location on a coordinate plane that is designed by an ordered pair (x,y) ?

Bella want to know what the students at her school think of her show. which is the best group to survey to find this information a. go to the mall and ask all of the students she recognizes from school b. ask her viewers to call in durning an episode of the show c. get a list of students at her school from the office and use a random number generator to pick 30 of them d. get a list of students at her school from the office and pick the first 30 students on the list

Find the distance between (7,-6) and (-3,-9)