Question

How we can find the radius of the circle?

Answer 1

The radius of a circle is the distance from the center of a circle to any point on the circle.
If you know circumference of circle then radius can be found by using formula.
$Circumference=2\times \pi \times Radius$
If you know areaof circle then radius can be found by using formula
$A=\pi r^2$
$Diameter=2\times Radius$