1.89 rounded to the nearest tenth is 1.9 - whether that is sq km, or hours, or tons.
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.
It is 4674 km rounded
The answer is 24 km2
The circumference is equal to pidiameter, or 3.143km 9.42 or 9 km rounded to the nearest km
0.4 km
1.9km
It depends on the units for 20.72. 20.72 metres, rounded to the nearest tenth km is 0.0 km.
120.0
1.89 rounded to the nearest tenth is 1.9 - whether that is sq km, or hours, or tons.
20
296.4
The answer is 24.0 km2
The answer is 296.4km2
12.0 km
12.0 KM
The answer is 13,000km