Express the following in centimetres (cm) in exponential notation.
156 km

Answer

To express 156 kilometers in centimeters in exponential notation, follow these steps:

### Step 1: Understand the conversion factors
1 kilometer (km) is equal to 1000 meters (m), and 1 meter is equal to 100 centimeters (cm).

### Step 2: Convert kilometers to centimeters
To convert kilometers to centimeters, we can combine the conversion factors:
- 1 km = 1000 m = 1000 × 100 cm = 100000 cm

Thus, we can say:
1 km = 100000 cm = 10^5 cm

### Step 3: Apply the conversion to 156 kilometers
Now, we need to convert 156 kilometers to centimeters using the conversion we found:
156 km = 156 × 10^5 cm

### Step 4: Final expression
Therefore, 156 kilometers in centimeters in exponential notation is:
156 × 10^5 cm

### Summary
The final answer is:
**156 × 10^5 cm**

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