2 x pi x the radius of the circle
Divide pie(3.14) from your circumference.
find the radius and times it by pie 3.1415 and so on.
What is the diameter of a circle when the circumference is 16 pie
Circumference of a circle = diameter*pi
10 x 3.14 (pie) = 31.4
Cherry Pie is delicious.C= πd
r2*pie=circumference 9(9)*pie 81*pie 254
(pie)(diameter)=(circumference) (pie)(9)(2)=18(pie)=56.549
this is called finding the circumference. The formula is 2*pie*radius
The area of a circle if its circumference 12pi is: 113.1 units squared.
You need to know the radius first. Next you simply double the radius to get the diameter and then multiply that by pie and you have now worked out the circumference of your circle :)
Will give the circumference of half of the circle.