The diameter of the circle is 10.8 cm
The circumference of the circle is 33.9 cm
Explanation:
Given that the radius of the circle is 5.4 cm
Diameter:
The diameter of the circle can be determined using the formula,
![d=2r](/tpl/images/0551/1471/d1756.png)
where r = 5.4
Thus, we have,
![d=2(5.4)=10.8](/tpl/images/0551/1471/9439f.png)
Thus, the diameter of the circle is 10.8 cm
Circumference:
The circumference of the circle can be determined using the formula,
![C=2\pi r](/tpl/images/0551/1471/377ac.png)
Substituting
and
, we have,
![C=2(3.14)(5.4)](/tpl/images/0551/1471/d70af.png)
![C=33.9](/tpl/images/0551/1471/bfe03.png)
Thus, the circumference of the circle is 33.9 cm