Geo Unit 6.1 Parts of a Circle Day 1

Front

What is the diameter of a circle?

Back

The diameter is the distance across a circle through its center, equal to twice the radius.

Front

What is the radius of a circle?

Back

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

Front

If the radius is 10 inches, what is the diameter?

Back

20 inches.

Front

What is the relationship between diameter and radius?

Back

The diameter is twice the length of the radius.

Front

What is the circumference of a circle?

Back

The circumference is the distance around the circle.

Front

How do you calculate the circumference of a circle?

Back

Circumference = π × diameter.

Front

What is π (pi)?

Back

π (pi) is a constant approximately equal to 3.14, used in calculations involving circles.

Front

If the diameter is 40 meters, what is the radius?

Back

20 meters.

Front

If the diameter is 80 meters, what is the radius?

Back

40 meters.

Front

If the diameter is 16 meters, what is the radius?

Back

8 meters.