Only if... (a) you know the weight of a measured amount of tarmac - and (b) you know what depth the tarmac is. If you can calculate the volume of tarmac, and you know the weight of a specific amount - you can convert to tonnes.
Metre is already a metric unit. If you mean metric tonnes to metres divide by a million, i.e. 1,000,000
Tonnes divided by 1,000 = kg
1 tonne = 1,000,000 grams
To convert from kilograms to tonnes, divide by 1000.
Without more information you cannot.
Yes, you need to know the density of tarmac which varies depending on the aggregate used but is around 2.4 tonne per cubic metre
2.4 tonnes/cubic meter
Metre is already a metric unit. If you mean metric tonnes to metres divide by a million, i.e. 1,000,000
Tonnes is weight, weight is not comparable to area without knowing the third dimension and density
1 Zetta Tonne = 1,000,000,000,000,000,000,000 Tonnes, that's 21 0's
Mulitply by the density in tonnes per cubic metre.
1.75 tonnes 1,750 kg of ballast is one cubic metre, if its concrete then you'd need to add 300kg of cement to mix this to the right ratio for a foundation.
35,000 pounds = about 15.9 tonnes. (divide pounds by 2,204.6 to get tonnes)
kg divided by 1,000 = tonnes
1 tonne = 1,000,000 grams
Tonnes divided by 1,000 = kg
European convert: 1 tonne = 1000 kg = 2000 pound US convert: 1 short ton = 2000 pound UK convert: 1 long ton = 2240 pound