To find the cost of 1 metre of armoured wire, you can divide the total cost by the total length of wire.
Total cost = 1,170 Naira
Total length of wire = 6.5 metres
Cost per metre = Total cost / Total length
Cost per metre = 1,170 Naira / 6.5 metres
Cost per metre = 180 Naira
Therefore, the cost of 1 metre of armoured wire is 180 Naira.