Suppose that a friend tells you that square root of 13 almost equal to 5.7 . Without a calculator,.how can you convince your friend that he or she must have made an error?

Question

explain all parts of anwser

Answer 1

13 is between 9 and 16, which are the squares of 3 and 4 respectively, so the square root of 13 must be between 3 and 4. 5.7 is not between these numbers so cannot be the square root of 13.