### All Basic Geometry Resources

## Example Questions

### Example Question #1 : How To Find Circumference

A circle has the equation below. What is the circumference of the circle?

(*x* – 2)^{2} + (*y* + 3)^{2} = 9

**Possible Answers:**

**Correct answer:**

The radius is 3. Yielding a circumference of .

### Example Question #961 : Grade 7

If a circle has an area of , what is the circumference?

**Possible Answers:**

**Correct answer:**

For a circle, the formula for area is and the formula for circumference is , where is the radius and is the diameter.

Plug the known quantities into the area formula and solve for the radius:

Now plug this value into the circumference formula to solve:

### Example Question #11 : How To Find Circumference

Line is the radius of the circle shown and has a length of 7.5. What is the circumference of the circle?

**Possible Answers:**

**Correct answer:**

Plug in the given value for the radius to find the circumference:

### Example Question #2 : Circumference Of A Circle

Find the circumference of a circle with a radius of .

**Possible Answers:**

**Correct answer:**

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 #3 : Circumference Of A Circle

Find the circumference of a circle that has a radius of .

**Possible Answers:**

**Correct answer:**

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 #4 : Circumference Of A Circle

Find the circumference of the circle with a radius of .

**Possible Answers:**

**Correct answer:**

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 #5 : Circumference Of A Circle

Find the circumference of a circle with a radius of .

**Possible Answers:**

**Correct answer:**

Recall the formula for finding the circumference of a circle:

Solve.

Simplify.

### Example Question #12 : How To Find Circumference

Find the circumference of a circle with a radius of .

**Possible Answers:**

**Correct answer:**

Recall the formula for finding the circumference of a circle:

Solve.

Simplify.

### Example Question #11 : Circumference Of A Circle

Find the circumference of a circle with a radius of .

**Possible Answers:**

**Correct answer:**

Recall the formula for finding the circumference of a circle:

Solve.

Simplify.

### Example Question #14 : How To Find Circumference

Find the circumference of a circle with a radius of .

**Possible Answers:**

**Correct answer:**

Recall the formula for finding the circumference of a circle:

Solve.

Simplify.

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