Question

The distance once around the circle is called

• A. Radius
• B. Chord
• C. Diameter
• D. circumference

Answer 1

The correct option is D

circumference

Distance around the circle.

Explanation of the correct option:

Option D. Circumference

The distance around the boundary of a circle is called the circumference.

Explanation of the incorrect option:

Option A. Radius

The distance from the center of a circle to any point on the boundary is called the radius.

The radius is half of the diameter; $2r=d$

Option B. Chord

The distance across a circle through the center is called the diameter.

Option C. Diameter

The line segment that joins two points on the circle is a chord.

Every diameter is a chord, but not every chord is a diameter.

Hence, the correct choice is “Option D”.