Respuesta :
Answer:
D : x² + y² = 64
Step-by-step explanation:
x² + y² = 8²
x² + y² = 64
therefore, your answer is 64
Answer:
D
Step-by-step explanation:
The circle equation is (x-h)² + (x-k)² = r²
Where (h,k) is the center of the circle and r is the radius
Since the center of this circle is at the origin and the radius is 8,
the equation will be x² + y² = 64