Question

what is smaller 11ft or 122in

Answer 1

there are 12inches in 1ft

you can find out how many inches are in the 11 feet by multiplying 

11x12=132 inches

there are 132 inches in 11 feet so 11 feet is larger

122inch is your answer (since you want to know what is smaller)

11ft>122in

Answer 2

11 feet would be smaller, I believe.
If you think about it, 12in is one foot, right?
What I did was just continuously add 12 inches until I hit 122in. For instance, this was my process: 12 [1ft], 24[2ft], 36[3ft], 48[4ft], 60[5ft], 72[6ft], 84[7ft], 96[8ft], 108[9ft], 120[10ft] 122 [10ft, 2in]

Therefore, 122in is smaller because it is only 10ft, 2in VS. 11ft.