Area and Circumference of Circles

Front

If my diameter is 19 inches, what is my radius?

Back

9.5 inches

Front

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

Back

20ft

Front

Find the circumference of a circle with a radius of 12.5 mm.

Back

78.5mm

Front

The radius of a circle is

Back

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

Front

Formula for finding the circumference of a circle with radius?

Back

2*π*r

Front

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

Back

16

Front

A DVD has a diameter of 15 millimeters. Which equation would help you determine the circumference?

Back

c = 15π

Front

Is the red line a radius or diameter of the circle?

Back

Radius

Front

A Circle has a radius of 4. What is the circumference of the circle? Options: 4π or about 12.56, 16π or about 50.24, 2π or about 6.28, 8π or about 25.12

Back

8π or about 25.12

Front

Circumference of a circle with radius 6 inches?

Back

12π or about 37.68 in