Question

What is the radius of the following circle x+y=100

Answer 1

r = 10

Explanation:

The equation of a circle in standard form:

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

(h, k) - center

r - radius

We have the equation:

`x^2+y^2=100\\\\(x-0)^2+(y-0)^2=10^2`

Therefore we have

the center (0, 0)

radius r = 10