The radius of a circle is 11 millimeters. Find the diameter

Answer: 22 millimeters

Step-by-step explanation:

The radius is the line that connects any part of the circle to its center, while a diameter is the line that cut into two equal halves the circle while passing through the centre.

Thus, Diameter is twice a radius

So, if radius of the circle is 11 millimeters.

Diameter = 2 x radius

= 2 x 11 millimeters

= 22 millimeters