Area and Circumference Flashcard

Front

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

Back

Diameter

Front

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

Back

Radius

Front

Find the radius of a circle whose diameter is 40 ft.

Back

20ft

Front

What is the circle's radius? Options: 5 cm, 10 cm, 20 cm

Back

5 cm

Front

Formula for AREA of a circle

Back

Front

Formula for the CIRCUMFERENCE of a circle?

Back

Front

To find pi we divide:
Diameter/Circumference
Circumference/Diameter
Circumference/Radius
Circumference/Radius

Back

Circumference/Diameter

Front

circumference

Back

Distance around a circle

Front

What number is pi?

Back

3.14

Front

What is the radius of a circle when the diameter is 70 m?

Back

35