circumference of a circle

If a bicycle tire has a diameter of 27 inches, what is its radius?

• 10 inches

• 12 inches

• 13.5 inches

• 14 inches

What is the diameter of a circle?

• The distance across the circle through its center.

• The distance around the circle.

• The distance from the center to the edge of the circle.

• The area of the circle.

If the radius of a cookie is 5 inches, what is the diameter?

• 8 inches

• 9 inches

• 10 inches

• 12 inches

What is π (pi)?

• A mathematical constant approximately equal to 3.14, used in calculations involving circles.

• A type of fruit found in tropical regions.

• A unit of measurement for angles.

• A famous mathematician known for his work in geometry.

What is the circumference of a circle?

• The measurement around the circle.

• The diameter of the circle.

• The area of the circle.

• The radius of the circle.

What is the relationship between diameter and radius?

• Diameter = radius

• Diameter = 2 × radius

• Diameter = radius × 2

• Diameter = radius + 2

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

• Circumference = 2 × π × radius.

• Circumference = π × diameter.

• Circumference = 2 × radius × radius.

• Circumference = π × radius × radius.

What is the importance of understanding circumference in geometry?

• It helps in solving problems related to circles and understanding their properties.

• It is only relevant for calculating the area of squares.

• It is used to measure the angles in triangles.

• It has no significance in modern geometry.

What does it mean if a circle has a larger circumference?

• It means the circle has a larger radius or diameter.

• It means the circle is drawn with a thicker pen.

• It means the circle is located in a different quadrant.

• It means the circle has a smaller area.

How do you find the diameter if you know the circumference?

• Diameter = Circumference / π.

• Diameter = Circumference × π.

• Diameter = Circumference + π.

• Diameter = Circumference - π.