Answer:
C. Acute
Explanation:
Pythagorean theorem can be used to determine the type of triangle any 3 given sides can form.
This,
A right ∆ is formed if a² + b² = c²
An acute ∆ is formed if a² + b² > c²
An obtuse ∆ is formed if a² + b² < c²
Note: c is the longest side of any triangle.
Using the side lengths given:
9.2² + 15.1² ? 17.4²
84.64 + 228.01 ? 302.76
312.65 > 302.76
An acute triangle is formed because a² + b² > c²