Question

What is the radius of the circle whose equation is x(squared) + y(squared) = 8?

A.) 2√2

B.) 4

C.) 64

Answer 1

@peachpi

Answer 2

\[\large (x-h)^{2}~+~(y-k)^{2}=r^{2}\]
\[\large (h,k)~=~Center~coordinates~of~circle\]
\[\large r~=~radius\]

Answer 3

the "8" represents radius squared... you need to take sqrt of 8

Answer 4

@dumbcow I got 2√2

Answer 5

correct