Area and Circumference of a Circle

Multiple Choice

Is the line drawn a radius or a diameter?

• radius

• diameter

Multiple Choice

Is the line drawn a radius or a diameter?

• radius

• diameter

Multiple Choice

Is the line drawn a radius or a diameter?

• radius

• diameter

Multiple Choice

Is the line drawn a radius or a diameter?

• radius

• diameter

Multiple Choice

Is the line drawn a radius or a diameter?

• radius

• diameter

Math Response

What is the value of the radius in the diagram shown?

Type answer here

Correct Answer: 9

Deg^°

Rad

Math Response

What is the value of the diameter in the diagram shown?

Type answer here

Correct Answer: 30

Deg^°

Rad

Math Response

What is the value of the radius in the diagram shown?

Type answer here

Correct Answer: 6

Deg^°

Rad

Math Response

What is the value of the radius in the diagram shown?

Type answer here

Correct Answer: 11.5

Deg^°

Rad

Math Response

What is the value of the diameter in the diagram shown?

Type answer here

Correct Answer: 15

Deg^°

Rad

Multiple Select

Which statement(s) are true about the circle shown?

Check all that apply.

• The radius of the circle is 4.

• The radius of the circle is 2.

• The diameter of the circle is 4.

• The diameter of the circle is 8.

Multiple Select

Which statement(s) are true about the circle shown?

Check all that apply.

• The radius of the circle is 18.

• The radius of the circle is 9.

• The diameter of the circle is 18.

• The diameter of the circle is 36.

Multiple Choice

What is the circumference of the circle shown?

$$C=\pi d$$

$$C=2\pi r$$

Express your answer in terms of $$\pi$$ .

• $$14\pi$$

• $$7\pi$$

• $$49\pi$$

• $$28\pi$$

Multiple Choice

What is the circumference of the circle shown?

$$C=\pi d$$

$$C=2\pi r$$

Express your answer in terms of $$\pi$$ .

• $$8\pi$$

• $$4\pi$$

• $$16\pi$$

• $$64\pi$$

Multiple Choice

What is the area of the circle shown?

$$A=\pi r^2$$

Express your answer in terms of $$\pi$$ .

• $$14\pi$$

• $$196\pi$$

• $$7\pi$$

• $$49\pi$$

Multiple Choice

What is the area of the circle shown?

$$A=\pi r^2$$

Express your answer in terms of $$\pi$$ .

• $$8\pi$$

• $$16\pi$$

• $$64\pi$$

• $$256\pi$$

Math Response

A circle has a circumference of $$20\pi$$ .

What is the radius of the circle?

Type answer here

Correct Answer: 10

Deg^°

Rad

Math Response

A circle has a circumference of $$18\pi$$ .

What is the diameter of the circle?

Type answer here

Correct Answer: 18

Deg^°

Rad

Math Response

A circle has an area of $$36\pi$$ .

What is the radius of the circle?

Type answer here

Correct Answer: 6

Deg^°

Rad

Math Response

A circle has an area of $$81\pi$$ .

What is the diameter of the circle?

Type answer here

Correct Answer: 18

Deg^°

Rad

Multiple Choice

The formula for the area of a circle is A = πr². If the area is 121π cm², what is the diameter?

• 11 cm

• 22 cm

• 121 cm

• 242 cm