The sides of a triangle are in the ratio 3 : 4 : 6. The

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The sides of a triangle are in the ratio 3 : 4 : 6. The triangle is :

1. acute-angled
2. right-angled
3. obtuse-angled
4. either acute-angled or rightangled

Correct Option: C

Here , The sides of a triangle are in the ratio 3 : 4 : 6
Let the sides of the triangle be 3k, 4k and 6k units.
Clearly, (3k)² + (4k)² < (6k)²
∴ The triangle will be obtuse angled.