Question

What is the circumference of the given circle in terms of pi 12in ( 1 point?

Answer 1

The circumference of a circle is calculated through the equation,
                             C = 2πr
where C is circumference and r is radius. For this item, I assume that 12 in is the radius such that,
                            C = 2π(12 in) = 24π
Thus, the circumference of the circle is 24π inches. 

Answer 2

Answer with explanation:

Circumference of a circle = If you start running from a point and return to that point Such that the shape formed is similar to  shape of the Wheel or Tyre of a car or Bicycle or the shape when you look at the sun from the earth surface,then the total distance covered,as displacement is Zero, is called circumference of circle.The Mid point of this shape is known as Center and distance from mid point of the shape to a point on the circle is called Radius of the circle.

The total Circumference of any Circle is equal to 2 π r, where r,is radius of that circle and π is a fixed constant , an irrational number=3.14.....

→ If Radius =12 inches

Circumference =2 π r

             =2 ×π×12

            = 24 π inches

→If Diameter = 12 inches

Radius

$=\frac{Diameter}{2}=\frac{12}{2}=6$

Radius =6 inches

Circumference =2 π r

             =2 ×π×6

            = 12 π inches