Circles - Circumference, Radius, Diameter

Front

What is the radius of a circle?

Back

The radius of a circle is the measurement from the center of the circle to any point on its edge.

Front

What is the diameter of a circle?

Back

The diameter of a circle is the measurement from one edge of the circle to the opposite edge, passing through the center.

Front

What is the relationship between radius and diameter?

Back

Front

What is the formula for the circumference of a circle?

Back

Front

If the diameter of a circle is 27, what is the radius?

Back

The radius is 13.5.

Front

If the radius of a circle is 18, what is the diameter?

Back

The diameter is 36.

Front

What is the circumference of a circle with a diameter of 16?

Back

Front

What is the area of a circle with a radius of 5?

Back

Front

What is the formula for the area of a circle?

Back

Front

What does π (pi) represent in circle geometry?

Back

π (pi) is a constant approximately equal to 3.14, representing the ratio of the circumference of a circle to its diameter.