If $$(78)^{2}$$ is subtracted from the square of the number, the answer so obtained is 6,460. What is the number ?
1). 109
2). 111
3). 113
4). 115
Let the number be $x$
Acc to ques,
=> $x^2 - 78^2 = 6460$
=> $x^2 = 6460 + 6084$
=> $x = \sqrt{12544} = 112$
Let the number be $x$
Acc to ques,
=> $x^2 - 78^2 = 6460$
=> $x^2 = 6460 + 6084$
=> $x = \sqrt{12544} = 112$