Answer:
The answer to your question is x² + y² = 2.5²
Step-by-step explanation:
Data
Center = (0, 0)
radius = 2.5
If we have the center of a circle and its radius, to write the standard equation is so simple, just substitute the values in the formula.
Standard equation of a circle
(x - h)² + (y - k)² = r²
-Substitution
h = 0 k = 0
(x - 0)² + (y - 0)² = 2.5²
or x² + y² = 2.5²
