Question

The blue segment below is a radius of o . What is the length of the diameter
of the circle?​

Answer 1

The diameter is essentially a straight line between two points in a circle that also intersects with the center. The radius is essentially a diameter, but split in half so that the two points are the center and a point on the circle.

Knowing that the radius is 12.7 units, we simply have to multiply 12.7 by 2:

The diameter is 25.4 units.