Circles Circles Circles

Front

What is the formula for circumference of a circle given the diameter? Options: C = π r, C = 2 π r, C = π d, C = 2 π d

Back

C = π d

Front

Area of a circle is 25 π in². Find the diameter.

Back

10 in

Front

Circumference of a circle is 22 π ft. What is the radius?

Back

11 ft

Front

If the circumference of a circle is 22π, what is the diameter?

Back

22 ft

Front

Circumference of a circle is 44 π feet. What is the radius?

Back

22 ft

Front

The _____ is the distance from the center to any point on the circle.

Back

radius

Front

The distance across a circle through its center is called the _____ (Options: diameter, radius, π, center).

Back

diameter

Front

A _____ is half of a circle.

Back

semicircle

Front

How can you calculate the radius if you are given the diameter? Options: Multiply the diameter by 2, Divide the diameter by 2, Add 2 to the diameter, Subtract 2 from the diameter

Back

Divide the diameter by 2

Front

Which segment is the diameter? Options: AC, BD, LM, CE

Back

BD