Answer :-
Since this is a right triangle, we can use the Pythagorean theorem
a^2 + b^2 = c^2 where a and b are the legs and c is the hypotenuse
7^2 + x^2 = 12^2
49 + x^2 =144
Subtract 49 from each side
x^2 = 144-49
x^2 = 95
Take the square root of each side
sqrt(x^2) = sqrt(95)
x = sqrt(95)
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