Question

center= (0,0) r=4

Answer 1

x^2 + y^2 = 16

Answer 2

standard equation of a circle is \[(x-h)^2 + (y-k)^2 = r^2\] where the center is at (h,k)

Answer 3

i tried 16 but it didn't come out right

Answer 4

i didn't type x^2 or y^2

Answer 5

i got it now

Answer 6

thank you i got confused but now i got it