Respuesta :
Answer:
0 20
Step-by-step explanation:
x2 + y2 = r2 , and this is the equation of a circle of radius r whose centre is the origin O(0, 0). The equation of a circle of radius r and centre the origin is x2 + y2 = r2 .
Step-by-step explanation:
Equation for circle centered at origin:
x² + y² = r².
r² = (-4)² + (-2)² = 20, r = √20
Equation for circle centered at origin:
x² + y² = r².
r² = (-4)² + (-2)² = 20, r = √20
