Circumference of a Circle

Front

What is the formula to calculate the circumference of a circle?

Back

Circumference = 2 × π × radius or Circumference = π × diameter.

Tags

CCSS.7.G.B.4

Front

If the radius of a circle is 15 yards, what is the circumference?

Back

94.2 yards.

Tags

CCSS.7.G.B.4

Front

What is the relationship between radius and diameter?

Back

Diameter = 2 × radius.

Tags

CCSS.7.G.B.4

Front

If the diameter of a circle is 20 feet, what is the radius?

Back

10 feet.

Tags

CCSS.7.G.B.4

Front

What is the distance around a circle called?

Back

Circumference.

Front

If the radius of a circle is 10 feet, what is the diameter?

Back

20 feet.

Tags

CCSS.7.G.B.4

Front

What is the approximate value of π (pi)?

Back

3.14.

Tags

CCSS.HSG.GMD.A.1

Front

If the circumference of a circle is 88 inches, what is the radius?

Back

Approximately 14 inches.

Tags

CCSS.7.G.B.4

Front

What is the diameter of a circle with a circumference of 31.4 feet?

Back

10 feet.

Tags

CCSS.7.G.B.4

Front

How do you convert radius to diameter?

Back

Multiply the radius by 2.

Tags

CCSS.7.G.B.4