A) \[2\sqrt{5}a\]
B) \[\sqrt{10}\,a\]
C) \[10\,a\]
D) \[5\sqrt{2}\,a\]
Correct Answer: D
Solution :
Distance between parallel lines given by \[a{{x}^{2}}+2hxy+b{{y}^{2}}+2gx+2fy+c=0\] is \[2\sqrt{\frac{{{g}^{2}}-ac}{a(a+b)}}\]\[=2\sqrt{\frac{{{(4a)}^{2}}+9{{a}^{2}}}{1(1+1)}}=2\sqrt{\frac{25{{a}^{2}}}{2}}=5\sqrt{2}a\].
You need to login to perform this action.
You will be redirected in
3 sec
