Answer:
The radius of circle is 2.5mm.
Step-by-step explanation:
Given that a line touches from one end to the other end passes throught the center is the diameter. So in order to find the value of radius you have to divide it by 2 :
[tex]diameter = 5mm[/tex]
[tex]radius = diameter \div 2[/tex]
[tex]radius = 5 \div 2[/tex]
[tex]radius = 2.5mm[/tex]
