# Areas of Circles (Grade 7)

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## Areas of Circles

1.

Find the area of a circle with a radius of 4.

2.

Calculate the area of a circle with a diameter of 10.

3.

A circle has a circumference of [math]12pi[/math]. What is the area of the circle?

4.

What is the area of a circle with a radius of 8?

5.

A circle has a diameter of 20. What is the area of the circle?

6.

What is the area of a circle that has a circumference of [math]18pi[/math]?

7.

If the area of a circle is [math]49pi[/math], what is the radius of the circle?

8.

What is the diameter of a circle that has an area of [math]121pi[/math]?

9.

A circle has a circumference of [math]15pi[/math]. What is the area of the circle?

10.

Which circle has the greater area: a circle with a radius of 16 or a circle with a circumference of [math]34pi[/math]? Support your answer.

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