243 cm2 ≈ 2.43 × 10^-8 km2. To convert square centimeters to square kilometers, divide by 10,000,000,000: 243 ÷ 10,000,000,000 = 2.43 × 10^-8.
How to convert square centimeters to square kilometers
km2 = cm2 × 1 × 10^-10
- 1 cm2 = 1 × 10^-10 km2 (and 1 km2 = 10,000,000,000 cm2).
- Multiply the amount by the factor: 243 × 1 × 10^-10 = 2.43 × 10^-8.
- Answer: 243 cm2 ≈ 2.43 × 10^-8 km2 (rounded to 6 significant figures).
Shortcut: dividing by 10,000,000,000 gives the same result as multiplying by 1 × 10^-10.
Square Centimeters to Square Kilometers table
| Square Centimeters (cm2) | Square Kilometers (km2) |
|---|---|
| 238 cm2 | 2.38 × 10^-8 km2 |
| 239 cm2 | 2.39 × 10^-8 km2 |
| 240 cm2 | 2.4 × 10^-8 km2 |
| 241 cm2 | 2.41 × 10^-8 km2 |
| 242 cm2 | 2.42 × 10^-8 km2 |
| 243 cm2 | 2.43 × 10^-8 km2 |
| 244 cm2 | 2.44 × 10^-8 km2 |
| 245 cm2 | 2.45 × 10^-8 km2 |
| 246 cm2 | 2.46 × 10^-8 km2 |
| 247 cm2 | 2.47 × 10^-8 km2 |
| 248 cm2 | 2.48 × 10^-8 km2 |
| cm2 | km2 |
|---|---|
| 1 cm2 | 1 × 10^-10 km2 |
| 5 cm2 | 5 × 10^-10 km2 |
| 10 cm2 | 1 × 10^-9 km2 |
| 50 cm2 | 5 × 10^-9 km2 |
| 100 cm2 | 1 × 10^-8 km2 |
| 1,000 cm2 | 1 × 10^-7 km2 |