ALG I Circumference and Area of A Circle

What is the radius of a circle with a diameter of 70 m?

• 30 m

• 35 m

• 40 m

• 50 m

If the radius of a circle is 5 cm, what is its area?

• 31.4 cm²

• 50 cm²

• 78.5 cm²

• 100 cm²

If a circle has a diameter of 6 meters, what is its circumference?

• 12.56 meters

• 18.84 meters

• 25.12 meters

• 15.70 meters

What is the definition of the radius in a circle?

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

• The radius is the length of the line segment that connects two points on the circle.

• The radius is the diameter of the circle divided by two.

• The radius is the distance around the circle from one point to another.

What is the difference between a chord and a diameter?

• A diameter is a special type of chord that passes through the center of the circle.

• A chord is always longer than a diameter.

• A diameter can only exist in a triangle.

• A chord is a line segment that connects two points on the circumference of a circle.

What is an Arc in a circle?

• A straight line that connects two points on the circle.

• A part of the circumference of a circle.

• The center point of the circle.

• A polygon inscribed within the circle.

What is the definition of a Chord in a circle?

• A chord is a line segment whose endpoints lie on the circle.

• A chord is a line that touches the circle at one point.

• A chord is a line segment that connects the center of the circle to any point on the circle.

• A chord is a line that passes through the center of the circle.

What is the definition of a Diameter in a circle?

• A line segment that connects two points on the circle's circumference.

• A line segment that passes through the center of the circle and has its endpoints on the circle.

• A line that touches the circle at one point only.

• A line segment that is equal to the radius of the circle.

What is the formula to find the area of a circle?

• Area = π × radius².

• Area = 2π × radius

• Area = π × diameter

• Area = radius × height

What is the formula for the circumference of a circle?

• Circumference = 2 × π × radius

• Circumference = π × radius²

• Circumference = 2 × radius

• Circumference = π × diameter