In order to find what type of triangle would the sides 36, 49 and 60 make ,we will make use of Pythagorean theorem.
If a²+b²>c², then lengths a, b, and c make up an acute triangle.
Conversely, if a²+b²<c², then lengths a, b, and c make up the sides of an obtuse triangle.
So checking for sides 36, 49 and 60.
36² + 49² = 3697
60²=3600
So we have here a²+b²>c², so the given sides lengths are that of an acute triangle.