Answer:
4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48
Step-by-step explanation:
4*1 = 4
4*2 = 8
4*3 = 12
and so on...
90
x=6
Each side equals 50ft. 5x+20=50
minus 20 on both sides
5x=30
divide by 5 on both sides