Yes and it will be a scalene triangle
If its a right angle triangle then its side lengths could be 3, 4 and 5
Yes and the given lengths would form an isosceles triangle.
9, 4, and 11 are three dimensionless numbers. Yes, they can represent the lengths of the sides of a triangle. You can take three straight sticks, cut them to lengths of 9, 4, and 11 inches, then lay them down on a table so that the ends hook up and they form a triangle.
11, 4, 8
Information about the lengths of two sides of a triangle is insufficient to determine its area.
A scalene triangle.
No it is not possible because the sum of the lengths of the two sides has to be greater than the length of the third side. 5 + 4 = 9 which is less than 11, so we can't form a triangle with these sides.
Yes, it is.
a scalene triangle
If you mean side lengths of 5, 4 and 1 then it is not possible to construct any triangle from the given dimensions.
No.