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

A. Acute-angled

B. Right-angled

C. Obtuse-angled

D. Either acute-angled or right-angled

Answer: Option C

Solution(By Examveda Team)

According to question,
Let sides of the triangle be 3x, 4x, 6x
Now check the square of biggest side and sum of square of two smallest side and check which is greater.
∴ (3x)² + (4x)² < (6x)²
⇒ 25x² < 36x²
∴ The triangle will be obtuse angled triangle.