0.4 km
1.9km
The answer is 296km2
It depends on the units for 20.72. 20.72 metres, rounded to the nearest tenth km is 0.0 km.
21 km squared
The number would be 2666. 6 is repeated 3 times. Rounded to the nearest hundred is 2700 and rounded to the nearest thousand is 3000.
0.4 km
The answer is 13,000km
1.9km
24.0
The answer is 296km2
It depends on the units for 20.72. 20.72 metres, rounded to the nearest tenth km is 0.0 km.
It doesn't need to be rounded. 2.1 km is the same as 2,100 meters. That's already rounded to the nearest meter, the nearest 10 meters, and the nearest 100 meters.
21 km squared
143,000 km
20
296.4