Question

The equation for the circle below is x^2+y^2=64 what is the length of the circle’s radius

Answer 1

The circles radius is 8

Explanation:

It is 8 because that's what they say it is

Answer 2

r = 8

Explanation:

The standard form of an equation of a circle:

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

(h, k) - center

r - radius

We have the equation:

`x^2+y^2=64\\\\(x-0)^2+(y-0)^2=8^2`

Therefore the center is (0, 0) and the radius r = 8