The value of an irrational number is estimated to be between 18 and 19. Which could be an expression?
square root of 2 to the 9th power
square root of 3 to the 5th power
square root of 6 to the 3rd power
square root of 7 to the 3rd power
square root of 2 to the 9th power
square root of 3 to the 5th power
square root of 6 to the 3rd power
square root of 7 to the 3rd power