JEE Mains · Maths · STD 11 - 9. straight line
The equations of the sides \(A B, B C \& C A\) of a triangle \(A B C\) are \(2 x+y=0, x+p y=21 a(a \neq 0)\) and \(x-y=3\) respectively. Let \(P(2, a)\) be the centroid of the triangle \(A B C\), then \((B C)^2\) is equal to
- A 121
- B 122
- C 123
- D 124
Answer & Solution
Correct Answer
(B) 122
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