If you factorise 112 then the expression can be re-written as :-
√112 = √(16 x 7) ......as 16 = 42, this becomes :-
√112 = 4√7...............if an answer in radical form is not acceptable then :-
√112 = 10.583 (5sf)
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4 times the square root of 7.
4 times the square root of 7
Yes, it is.
√121 = √(112)= 11.
112 is 121, and calculating the square root of 121 gives an answer of 11 as well.