Answer:
C = 5.65 units
Step-by-step explanation:
Given that,
The diameter of a circle, d = 1.8
Radius, r = d/2 = 0.9
We need to find the circumference of a circle. It is given by the relation as follows :
[tex]C=2\pi r\\\\C=2\times 3.142\times 0.9\\\\C=5.65\ \text{unit}[/tex]
So, the circumference of a circle is 5.65 units.
