A circle has diameter `16` `cm` . What is the radius of the circle ?

Options

A. `6cm`
B. `7cm`
C. `8cm`
D. `9cm`

Answer

To find the radius of a circle when given the diameter, follow these steps:

### Step-by-Step Solution:

1. **Identify the Given Information**:
- The diameter of the circle is given as `16 cm`.

2. **Recall the Formula for Radius**:
- The radius of a circle is half of its diameter. The formula to find the radius (r) from the diameter (d) is:
\[ r = \frac{d}{2} \]

3. **Substitute the Given Diameter into the Formula**:
- Substitute `16 cm` for `d` in the formula:
\[ r = \frac{16 \text{ cm}}{2} \]

4. **Perform the Calculation**:
- Divide `16 cm` by `2`:
\[ r = 8 \text{ cm} \]

5. **State the Final Answer**:
- The radius of the circle is `8 cm`.