A triangle ABC is formed by 3 vectors and AB = i + 2j + 2k, CA = 4i - 7j + 6k. The area of the triangle is
1
\(\sqrt {905}\)
2
\(2 \times \sqrt {905}\)
3
\(\sqrt {905} /2\)
4
\(\sqrt {905/2}\)
A triangle ABC is formed by 3 vectors and AB = i + 2j + 2k, CA = 4i - 7j + 6k. The area of the triangle is