Area and Circumference

Front

What number represents π?

Back

3.14

Tags

CCSS.HSG.GMD.A.1

Front

Find the circumference of a circle with a radius of 5 cm.

Back

31.4 cm

Tags

CCSS.7.G.B.4

Front

What is the formula for the circumference of a circle?

Back

C = 2πr or C = πd

Tags

CCSS.7.G.B.4

Front

What is the diameter of a circle?

Back

The diameter is the distance across the circle through its center, equal to twice the radius.

Tags

CCSS.HSG.C.A.2

Front

What is the radius of a circle?

Back

The radius is the distance from the center of the circle to any point on its circumference.

Front

If the radius of a circle is 7 cm, what is the diameter?

Back

14 cm

Tags

CCSS.7.G.B.4

Front

If the circumference of a circle is 31.4 cm, what is the radius?

Back

5 cm

Tags

CCSS.7.G.B.4

Front

What is the area of a circle with a radius of 3 cm?

Back

28.26 cm² (Area = πr²)

Tags

CCSS.7.G.B.4

Front

What is the formula for the area of a circle?

Back

A = πr²

Tags

CCSS.7.G.B.4

Front

How do you find the circumference of a circle using the diameter?

Back

C = πd

Tags

CCSS.7.G.B.4