Convert the following into metre
(i) 40 Em (thickness of Milky way galaxy)
(ii) 1.4 Gm (diameter of Sun)
(iii) 41 Pm (distance of nearest star)

Explanation

To convert the given measurements into meters, we will use the following conversions:

1. **1 exometer (Em) = 10^18 meters**
2. **1 gigameter (Gm) = 10^9 meters**
3. **1 petameter (Pm) = 10^15 meters**

Now, let's go through each conversion step by step.

### (i) Convert 40 Em to meters:

1. **Identify the conversion factor**:
- 1 Em = 10^18 meters.

2. **Set up the conversion**:
- 40 Em = 40 × (10^18 meters).

3. **Calculate the result**:
- 40 × 10^18 = 4.0 × 10^19 meters (in scientific notation).

**Final Answer**: 40 Em = 4.0 × 10^19 meters.

### (ii) Convert 1.4 Gm to meters:

1. **Identify the conversion factor**:
- 1 Gm = 10^9 meters.

2. **Set up the conversion**:
- 1.4 Gm = 1.4 × (10^9 meters).

3. **Calculate the result**:
- 1.4 × 10^9 = 1.4 × 10^9 meters.

**Final Answer**: 1.4 Gm = 1.4 × 10^9 meters.

### (iii) Convert 41 Pm to meters:

1. **Identify the conversion factor**:
- 1 Pm = 10^15 meters.

2. **Set up the conversion**:
- 41 Pm = 41 × (10^15 meters).

3. **Calculate the result**:
- 41 × 10^15 = 4.1 × 10^16 meters (in scientific notation).

**Final Answer**: 41 Pm = 4.1 × 10^16 meters.

### Summary of Answers:
- (i) 40 Em = 4.0 × 10^19 meters
- (ii) 1.4 Gm = 1.4 × 10^9 meters
- (iii) 41 Pm = 4.1 × 10^16 meters