10.4b Practice Area and Circumference of 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

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

How to calculate the radius from 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

Front

Which segment is a radius? Options: LM, DC, BD, ML

Back

DC

Front

Circle

Back

set of all points in a plane that are the same distance from a point called the center

Front

radius

Back

distance from the center to any point on the circle

Front

Diameter

Back

distance across the circle through the center

Front

Circumference

Back

distance around the circle