# Basic Geometry : How to find circumference

## Example Questions

### Example Question #21 : How To Find Circumference

Find the circumference of a circle with a radius of .

Explanation:

Recall the formula for finding the circumference of a circle:

We can substitute in the value for the radius in order to find the circumference of the circle in question.

Solve.

Simplify.

### Example Question #21 : How To Find Circumference

Find the circumference of a circle with a radius of .

Explanation:

Recall the formula for finding the circumference of a circle:

We can substitute in the value for the radius in order to find the circumference of the circle in question.

Solve.

Simplify.

### Example Question #22 : How To Find Circumference

Find the circumference of a circle with a radius of

Explanation:

Recall the formula for finding the circumference of a circle:

We can substitute in the value for the radius in order to find the circumference of the circle in question.

Solve.

Simplify.

### Example Question #23 : How To Find Circumference

Find the circumference of a circle with a radius of .

Explanation:

Recall the formula for finding the circumference of a circle:

We can substitute in the value for the radius in order to find the circumference of the circle in question.

Solve.

Simplify.

### Example Question #24 : How To Find Circumference

Find the circumference of a circle with a radius of .

Explanation:

Recall the formula for finding the circumference of a circle:

We can substitute in the value for the radius in order to find the circumference of the circle in question.

Solve.

Simplify.

### Example Question #214 : Basic Geometry

What is the circumference of a circle whose radius is .

Explanation:

To find circumference, you must use the follow equation.

### Example Question #25 : How To Find Circumference

Find the circumference of a circle that is inscribed in a square with side lengths of .

Explanation:

Notice that when a circle is inscribed in a square, the side length of the square is also the diameter of the circle.

Recall how to find the circumference of a circle:

Plug in the given diameter to find the circumference.

### Example Question #26 : How To Find Circumference

Find the circumference of a circle that is inscribed in a square that has side lengths of .

Explanation:

Notice that when a circle is inscribed in a square, the side length of the square is also the diameter of the circle.

Recall how to find the circumference of a circle:

Plug in the given diameter to find the circumference.

### Example Question #21 : How To Find Circumference

Find the circumference of a circle that is inscribed in a square that has side lengths of .

Explanation:

Notice that when a circle is inscribed in a square, the side length of the square is also the diameter of the circle.

Recall how to find the circumference of a circle:

Plug in the given diameter to find the circumference.

### Example Question #25 : How To Find Circumference

Find the circumference of a circle that is inscribed in a square that has side lengths of .