A) 12
B) 13
C) 14
D) 15
Correct Answer: C
Solution :
According to question, \[{{x}^{2}}+{{y}^{2}}=100\] ?(i) \[{{x}^{2}}-{{y}^{2}}=28\] ?(ii) According both the equations, we get \[\therefore \] \[x=8\] According the Eq. (i), we get \[{{y}^{2}}=100-64\] \[{{y}^{2}}=36\] \[\therefore \] \[y=6\] So \[x+y=8+6=14\]You need to login to perform this action.
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