Question

The equation for the circle below is x2 + y2 = 16. What is the length of the
circle's radius?

Answer 1

4

Explanation:

The general equation circle is

`{x}^(2) + {y}^(2) = {r}^(2)`

Where r is the radius

Plug in the equation

`{x}^(2) + {y}^(2) = 16`

Take the sqr root of 16 tocfind the radius

`√(16) = 4`