Parts of a Circle and Circumference Exit Ticket

Front

What is the formula for the circumference of a circle?

Back

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

Front

If the diameter of a circle is 8 ft, what is its circumference using π as π?

Back

8π ft.

Front

How do you calculate the circumference of a circle with a radius of 30 km using π as 3.14?

Back

Circumference = 2 × π × radius = 2 × 3.14 × 30 = 188.4 km.

Front

What is the circumference of a semicircle with a diameter of 10 in?

Back

Circumference = π × diameter/2 + diameter = (3.14 × 10/2) + 10 = 15.70 in.

Front

What is the value of π?

Back

π is approximately 3.14 or can be represented as 22/7.

Front

If the radius of a circle is 14 cm, what is its circumference using 22/7 for π?

Back

Circumference = 2 × (22/7) × 14 = 88 cm.

Front

What is the circumference of a circle with a diameter of 20 cm using 3.14 for π?

Back

Circumference = π × diameter = 3.14 × 20 = 62.8 cm.

Front

What is the relationship between diameter and radius?

Back

Diameter = 2 × radius.

Front

How do you find the circumference of a circle if only the radius is given?

Back

Use the formula: Circumference = 2 × π × radius.

Front

What is the circumference of a circle with a radius of 5 m using π as 3.14?

Back

Circumference = 2 × 3.14 × 5 = 31.4 m.