Question

Write the equation of a circle whose center is at the origin and contains the point (2, 3).

Answer 1

Answer:

x^2+y^2=13

Step-by-step explanation:

radius is the distance from the origin to the point

r=(2^2+3^2)^(1/2)=13^(1/2)

x^2+y^2=(13^(1/2))^2=13