Question

What’s is the radius for a circle whose equation is x2 + y2=16

Answer 1

Answer:

4

Step-by-step explanation:

The equation of a circle is:

(x − h)² + (y − k)² = r²

where (h, k) is the center and r is the radius.

x² + y² = 16 is a circle with center (0, 0) and radius 4.