What is the diameter of the circle having 3 cm radius?

Options

A. 6 cm
B. 12 cm
C. 1.5 cm
D. 8 cm

Answer

To find the diameter of a circle given its radius, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Definitions**:
- The radius of a circle is the distance from the center of the circle to any point on its circumference.
- The diameter of a circle is the distance across the circle through the center, which is twice the radius.

2. **Identify the Given Information**:
- The radius of the circle is given as 3 cm.

3. **Use the Formula for Diameter**:
- The formula to calculate the diameter (D) of a circle is:
\[ D = 2 \times \text{radius} \]

4. **Substitute the Given Radius into the Formula**:
- Plugging in the value of the radius:
\[ D = 2 \times 3 \text{ cm} \]

5. **Calculate the Diameter**:
- Performing the multiplication:
\[ D = 6 \text{ cm} \]

6. **State the Final Answer**:
- Therefore, the diameter of the circle is 6 cm.

### Final Answer:
The diameter of the circle is **6 cm**.