1) A diagram of a hockey rink is shown below. What is the approximate area of the middle
circle if the distance across the entire rink is 30 feet? A = tr?
30 feet
A
60 ft
B 225 ft
C 900 ft
D 3,600 ft
OB
OA

Nick has box brads. he uses 4 brads for the first project. nick let’s b represent the original number of brads and finds that for the second project, the number of brads he uses is 8 more than half the difference of b and 4. write an expression to represent the number of brads he uses for the second project.