💚 Radius, Diameter, & Circumference Practice #1

Front

What does 'circumference' mean?

Back

Distance around a circle.

Front

The radius of a circle is:

Back

The measurement from the center of a circle to an edge of the circle.

Front

If my radius is 10ft, what is my diameter?

Back

20ft.

Front

Determine the radius of the penny if its diameter is 19 mm.

Back

9.5 mm.

Front

A cruise ship has a large, circular window with a diameter of 6 meters. What is the window's approximate circumference?

Back

18.84 m.

Front

What is the formula for calculating the circumference of a circle?

Back

C = π × d or C = 2 × π × r.

Front

What is the relationship between diameter and radius?

Back

Diameter is twice the radius (d = 2r).

Front

If the diameter of a circle is 12 cm, what is the radius?

Back

6 cm.

Front

What is the circumference of a circle with a radius of 5 cm?

Back

31.4 cm.

Front

What does 'diameter' mean?

Back

A line segment that passes through the center of a circle and has endpoints on the circle.