The distance from center of circle to its boundary is known as

Options

A. Diameter
B. Radius
C. Circumference
D. Chord

Answer

To solve the question, we need to identify the term that describes the distance from the center of a circle to its boundary.

### Step-by-Step Solution:

1. **Understanding the Circle**:
- A circle is defined as a set of points that are all the same distance from a central point, known as the center of the circle.

2. **Identifying the Center**:
- Let's denote the center of the circle as point O.

3. **Drawing the Circle**:
- When we draw a circle, we can visualize it as a round shape with point O at its center.

4. **Measuring the Distance**:
- The distance from the center O to any point on the boundary of the circle is what we are trying to find.

5. **Defining the Distance**:
- This distance is a straight line that connects the center of the circle to the edge of the circle.

6. **Naming the Distance**:
- The term used to describe this distance is called the "radius".

7. **Conclusion**:
- Therefore, the distance from the center of the circle to its boundary is known as the radius.

### Final Answer:
The distance from the center of the circle to its boundary is known as the **radius**.

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