do you mean 1.3 or 13 klometres
1.3 kms equals 1300 metres
13 kms equals 13000metres
metric system works in 10s 100s or 1000s here is a rough overview
10 mm equals 1 centimetre
100 centimetre equals 1 metre also 1000 millimetres equals 1 metre
1000 metres equals a kilometre
the metric system also works on volume as well 1 cubic metre equals 1000 litres
10 cms cubed is 1 litre
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You cannot convert 400 meters to 3 kilometers. They are two different lengths. 1 kilometer = 1,000 meters. 3 kilometers would be 3,000 meters. 400 meters would be 0.4 kilometers
Convert everything to meters (1 kilometer = 1000 meters); then you can easily compare the measurements.
To compare this, you must convert to a common unit. For example, converting everything to meters, 3 km = 3000 meters. This is less than 4000 meters.
5.4 x 104 meters is 54,000 meters or 54 kilometers. (A kilometer is 1000 meters.) Notationally, 1 km= 1 x 103 meters. To convert the exponent form, divide by 103 (reduce exponent by 3) : 5.4 x 104 / 1 x 103 = 5.4 x 104-3 = 5.4 x 101 = 54.
3 kilometers is far more longer than 4 meters. 1 kilometer = 1,000 meters. 3 kilometers would be equal to 3,000 meters.