Which choice is the smallest value?

Option 1: 1/0.1
Option 2: (0.1)^2
Option 3: sqrt0.01
Option 4: 0.1/1
Option 5: 0.1

1 / 0.1 = 0.1 ∙ 10 / 0.1 = 10

0.1² = ( 1 / 10 )² = 1² / 10² = 1 / 100 = 0.01

√0.01 = √1/100 = √1 / √100 = 1 / 10 = 0.1

0.1 / 1 = 0.1

0.1² = 0.01

is the smallest value