Final answer:
The total area of woodland in the country is 500 km².
Step-by-step explanation:
To find the total area of woodland in the country, we need to determine the percentage of woodland that is not native. Since 70% of the area is native woodland, then the remaining 30% is not native woodland. We can use this information to set up a proportion:
70% (native woodland) = 350 km²
30% (non-native woodland) = x km²
Now, solve for x:
x = (30/70) * 350 km² = 150 km²
The total area of woodland in the country is the sum of the native woodland and non-native woodland:
Total area of woodland = 350 km² + 150 km² = 500 km²