In a trapezium one of the lengths of the parallel side is 2 times to its other parallel side and the sum of the parallel side is 4 times to the height of the trapezium. If the area of the trapezium is 1800 m2, then find the length of parallel sides.
1
10 m, 20 m
2
20 m, 40 m
3
40 m, 80 m
4
30 m, 60 m