9.4
326.6
14.0
17.2
62.2
8.8
The correct answer is 20.0
19
13.2 percent (rounded to 1dp).
Circumference of a circle is equal to pi*diameter, or 2*pi*radius, so if d=17.4cm, c=54.7cm (to 1dp), if r=17.4cm, c=109.3cm (to 1dp).
The radius is 3.45
It is: 276.3 because 0.02 is less than 0.05