Question 105031
Hello!


The radius of a circle is equal to {{{diameter/2}}}
{{{circumference=2*pi*radius}}}
{{{area=pi*radius^2}}}


With those solution let's find it's radius.
radius is equal to {{{diameter/2}}} so it is equal to 6.3(which is the diameter)/2
The radius is 3.15cm



Let's find the circumference.
{{{circumference=2*pi*radius}}} with the value 3.14 as pi, now we know that it is equal to 2*3.14*3.15.
The circumference is 19.782cm


Let's find the area.
{{{area=pi*radius^2}}}
it is equal to 3.14*3.15^2
The area is 31.15665cm^2



note:{{{pi}}} is most of the time equal to 3.14