Identifying Basic Parts of a Circle

Front

What part of a circle is the distance from the center to the edge?

Back

Radius

Front

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

Back

diameter / 2

Front

What is the term for the distance around a circle?

Back

Circumference

Front

What is the line segment that passes through the center and connects two points on the circle?

Back

Diameter

Front

What constant represents the ratio of the circumference of a circle to its diameter?

Back

Pi (π)

Front

What is the relationship between diameter and radius?

Back

Diameter is twice the radius.

Front

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

Back

10 cm

Front

If the circumference of a circle is 31.4 cm, what is the radius?

Back

5 cm (using the formula C = 2πr)

Front

What is the area of a circle with a radius of 3 cm?

Back

28.26 cm² (using the formula A = πr²)

Front

What is the circumference of a circle with a diameter of 10 cm?

Back

31.4 cm (using the formula C = πd)