Find CA
A) 8
B) 11
C) 13
D) 17

B hope it works helps im not sure but its b

C. 13

Step-by-step explanation:

substitute x for 13 in both equations and you get the same answer

or

hello from mrbilldoesmath!

answer:   x^2 + y^2 = 1024

discussion:

the equation of a circle with center (h,k) and radius "r" is

(x-h)^2 + (y-k)^2 = r^2.

in our case

(x-0)^2 + (y-0) ^2 = 32^2 = 1024

you,

mrb