Respuesta :
Answer:
x² + y² = 9
Step-by-step explanation:
The equation of a circle centred at the origin is
x² + y² = r² ← r is the radius
Here r = 3, hence
x² + y² = 3² ⇒ x² + y² = 9
Answer:
x² + y² = 9
Step-by-step explanation:
The equation of a circle centred at the origin is
x² + y² = r² ← r is the radius
Here r = 3, hence
x² + y² = 3² ⇒ x² + y² = 9
