Step 1: Recall the conversion factor between kilometers (km) and meters (m).
There are 1000 m in 1 km.
1km=1000 m
Step 2: Convert 2 km to meters.
2km=2×1000m=2000 m
Step 3: Add the converted kilometers to the given meters.
2000m+90m=2090 m
Therefore, 2km90m=2090 m.
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