Circumference and Area of Circles

Front

Does this picture show the diameter or radius of a circle?

Back

Radius

Front

Does this picture show the diameter or radius of a circle?

Back

Diameter

Front

If the diameter of a circle is 4, what is the radius?

Back

2

Front

If r = 4, d = ?

Back

8

Front

What is the formula for finding the area of a circle?

Back

Front

Find the circumference of the circle in the image.

Back

62.8

Front

What is the area of the circle in the image?

Back

314

Front

What is the area of the circle in the image?

Back

113.04

Front

The diameter is 8 inches. What is the circumference?

Back

25.12 inches

Front

Find the area of the circle below.

Back

28.26 cm units²