Question

(2,3) is a point on a circle with center at the origin.what is the radius of this circle. Write the coordinates of a point where the circle cut the axis

Answer 1

Step-by-step explanation:

if (2,3) is a point on a circle then the distance from the centre of the circle to that point = radius of that circle.

r = √(2² + 3²)

= √(4 + 9)

= √13 units .

if the circle has r = √13 and centre at the origin then it'll cut the axes at (√13,0), (0,√13), (-√13,0) and (0,-√13) points