Answer -> (12) I'm very late haha but hopes this helps!
A ray, is a line that has one endpoint on one side and on the other side is an infinity amount of numbers
#1 15cm^2. ====> Good Luck! <====
Red Perimeter= 4u X π= 4uπ
Blue Perimeter= u X π= uπ
Red Area= 2u X 2u X π= 4u2π
Blue Area= u X u X π= u2π
B) in a function, the output is allowed to be shared…