Circles and Circumference

Front

Expression to find the approximate circumference of the quilt piece: 2(pi)16, 2(pi)8, 2(8), 2(4)

Back

2(pi)8

Front

What is the diameter? Options: 8, 16, 10, 4

Back

16

Front

Method to find the radius of the circle formed by the pinwheel as it spins: Divide 9 inches by 2, Divide 9 inches by pi, multiply 9 inches by pi, multiply 9 inches by 2

Back

Divide 9 inches by 2

Front

Which best approximates the circumference of the outer ring of this clip? Options: 27cm, 18cm, 9cm, 3cm

Back

9cm

Front

What is the circumference?

Back

48

Front

What is the radius? Options: 18, 72, 38, 14

Back

18

Front

What is the circumference?

Back

36pi

Front

What is the radius?

Back

13

Front

What is the diameter?

Back

26

Front

The radius is...
Options: a line that crosses through the center and touches each edge, the center point of a circle, a line from the center point to the edge of the circle, an element in science

Back

a line from the center point to the edge of the circle