Area of a Circle

Front

What is the diameter of a circle?

Back

A line that goes from one end of the circle to the other and crosses the center point.

Front

What is the radius of a circle?

Back

Halfway through a circle.

Front

Is the red line a radius or diameter of the circle?

Back

Radius.

Front

What is the area of a circle?

Back

The amount of space inside of the circle.

Front

How do you calculate the area of a circle?

Back

Area = π × radius².

Front

What is the value of π (pi)?

Back

Approximately 3.14.

Front

If the radius of a circle is 7 cm, what is the area?

Back

Area = π × (7 cm)² ≈ 153.86 cm².

Front

What is the relationship between diameter and radius?

Back

Diameter = 2 × radius.

Front

If the diameter of a circle is 10 m, what is the radius?

Back

Radius = 10 m / 2 = 5 m.

Front

What is the circumference of a circle?

Back

The distance around the circle, calculated as Circumference = 2 × π × radius.