If the diameter of a circle is 35 cm, then what will be its circumference (in cm.) ?

Options

A. 110
B. 220
C. 21
D. 42

Answer

To find the circumference of a circle when the diameter is given, we can use the formula:

**Circumference (C) = π × d**

where:
- C is the circumference,
- π (pi) is approximately 22/7 or 3.14,
- d is the diameter of the circle.

### Step-by-Step Solution:

1. **Identify the diameter**:
The diameter of the circle is given as 35 cm.

2. **Use the formula for circumference**:
We will use the formula C = π × d. Here, d = 35 cm.

3. **Substitute the value of the diameter into the formula**:
C = π × 35 cm.

4. **Use the value of π**:
We can use π as 22/7 for this calculation.
So, C = (22/7) × 35 cm.

5. **Multiply 35 by 22**:
First, calculate 22 × 35.
22 × 35 = 770.

6. **Divide by 7**:
Now, divide 770 by 7.
770 ÷ 7 = 110.

7. **Final Result**:
Therefore, the circumference of the circle is 110 cm.

### Summary:
The circumference of the circle with a diameter of 35 cm is **110 cm**.