That would be C....(1 x 10^-1) + (6 x 10^-2) + (9 x 10^-3)
The area is (BK) times (AK or CK).
If you have no numbers given, it's not possible to find the length of BK, or the actual number that represents the area.
The answer is 5.75.Not exact but close
Radius is 16, that’s all I know