(REVIEW) Circles (radius, diameter, center)

Front

What is the definition of a circle?

Back

A round closed shape that has no corners where all points of the circle are at an equal distance from the center.

Front

What is the diameter of a circle?

Back

The straight line that goes through the center of a circle from edge to edge.

Front

If the radius of a circle is 2 ft, what is the diameter?

Back

4 ft (Diameter = 2 * Radius)

Front

What is the radius of a circle?

Back

The distance from the center of the circle to any point on its circumference.

Front

If the diameter of a circle is 8 ft, what is the radius?

Back

4 ft (Radius = Diameter / 2)

Front

What is the relationship between radius and diameter?

Back

Diameter is twice the radius (Diameter = 2 * Radius).

Front

What is the center of a circle?

Back

The point that is equidistant from all points on the circle.

Front

If a circle has a radius of 5 cm, what is the circumference?

Back

The circumference is approximately 31.42 cm (Circumference = 2 * π * Radius).

Front

What is the formula to find the area of a circle?

Back

Area = π * Radius^2.

Front

If the diameter of a circle is 10 cm, what is the area?

Back

The area is approximately 78.54 cm² (Area = π * (5 cm)²).