Circumference Cycle Review

Front

What is the diameter of a circle?

Back

The distance from an edge of a circle to another edge through the center.

Front

What is the formula for the circumference of a circle?

Back

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

Front

If the perimeter of a square is 36 feet, what is the circumference of the inscribed circle?

Back

28.26 feet.

Front

What is the relationship between radius and diameter?

Back

Diameter = 2 × radius.

Front

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

Back

20 ft.

Front

What is the perimeter of a semi-circle with a diameter of 10 yd?

Back

28.27 yd.

Front

If the diameter of a circle is 19 inches, what is the radius?

Back

9.5 inches.

Front

What does the term 'circumference' refer to?

Back

The measurement around the circle.

Front

How do you calculate the radius if you know the diameter?

Back

Radius = diameter ÷ 2.

Front

What is the circumference of a circle with a diameter of 12 inches?

Back

Circumference = π × 12 inches ≈ 37.68 inches.