Answer: a. 55
Step-by-step explanation:
The formula to find the geometeric mean between two numbers a and b is given by :-
[tex]G.M. =\sqrt{ab}[/tex]
The given numbers are : 275 and 11
The geometric mean of 275 and 11 is given by :-
[tex]G.M.=\sqrt{275\times11}\\\\\Rightarrow\ G.M. =\sqrt{3025}\\\\\Rightarrow\ G.M.=\sqrt{55\times55}\\\\\Rightarrow\ G.M.=\sqrt{55^2}\\\\\Rightarrow\ G.M.=55[/tex]
Hence, the geometric mean of 275 and 11 is 55.
So , the correct option is a. 55 .
