Answer with explanation:
→General equation of circle is :

having center, (a,b) and radius =r units.
→If the center , of the circle is at Origin (0,0) and have radius equal to r units the equation of circle will be:
x² + y²=r²
Radius= Distance from the center to any point on the circle,which is same for that circle.
⇒So, Yes , With Conformity,All the radii of a circle have the same length is a true Statement.
True