Question 384919
Start with 270 meter of wire 

1st is 30   =30 meter

2 second 2 times longer than the first 60  2nd = 60 meter this is doubled from the first

3rd times longer than the second.         3rd  = 180 meters tripled from the second. 

1st    30
2nd    60 2 times
3rd    180 3 times

270 meters..