It is definitely J yes it is
The answer is 7
1/7 of 49 is 7
It would come out to 240/50 which would equal 4.8
plus 0.5 which would equal 5.3 so d is your answer
Substitute C for 15 then divide 2(pi). (pi)= 3.14
15 / 2(3.14)
15 / 6.28
r = 2.39
I hope this helped love!!