Find the circumference of the circle.

12 cm is in the middle with two straight lines one on the left and one on the right

Plz help!! I will give you the brainiest
The shape is a circle

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.

In trapezoid efgh, m∠gfe=63∘. identify m∠ghe. !

The measure of an angle is 117°. what is the measure of a supplementary angle?