Which term describes the distance around a circle?

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Multiple Choice

Which term describes the distance around a circle?

Explanation:
The distance around a circle is called the circumference. This term refers to the length of the circle’s boundary—the path you would travel if you went all the way around. The circumference is related to the circle’s size by formulas like C = 2πr or C = πd, where r is the radius and d is the diameter. Radius is a line from the center to a point on the circle, not the distance around. Diameter is the longest straight line across the circle through the center, also not the boundary length. Perimeter is a general term for the boundary length of any shape, but for circles the specific term used in standard math is circumference.

The distance around a circle is called the circumference. This term refers to the length of the circle’s boundary—the path you would travel if you went all the way around. The circumference is related to the circle’s size by formulas like C = 2πr or C = πd, where r is the radius and d is the diameter.

Radius is a line from the center to a point on the circle, not the distance around. Diameter is the longest straight line across the circle through the center, also not the boundary length. Perimeter is a general term for the boundary length of any shape, but for circles the specific term used in standard math is circumference.

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