We can say that the circumference of the cake is (A) 37.68 inches.
The circumference of a circle or ellipse in geometry is its perimeter.
That is, if the circle were opened up and straightened out to a line segment, the circumference would be the length of the arc.
The curve length around any closed figure is more often referred to as the perimeter.
So, the circumference of the cake will be:
We know that the way across the cake is 12 inches.
Which means the diameter of the cake is 12 inches.
Then, the radius will be:
Diameter/2 ⇒ 12/2 ⇒ 6 inches
Circumference formula: 2πr
Now, calculate the circumference as follows:
2πr
2(3.14)r
6.28r
(6.28)6
37.68 inches
Therefore, we can say that the circumference of the cake is (A) 37.68 inches.
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Complete question:
A cookie cake has a layer of frosting around the outside of the cake forming the circumference. the distance all the way across the cake is 12 inches. find the circumference of the cookie cake.
(A) 37.68 in
(B) 18.84 in
(C) 113.04 in
(D) 12 in