Using rational approximations, what statement is true?

Question

Using rational approximations, what statement is true?

81−−√<9
start root 81 end root less than 9

71−−√>61−−√
start root 71 end root greater than start root 61 end root

81−−√>9
start root 81 end root greater than 9

71 −−−√<61−−√

Answer 1

start root 71 end root less than start root 61 end root

Answer 2

Using rational approximations, what statement is true?

start root 71 end root less than start root 61 end root

Start root 71 end root less than start root 61 end root