Obtuse scalene triangle.
Use the Law of Cosines to find the 3rd side c =5.273
Sides: a = 4 b = 7.3 c = 5.273
Once you have ALL 3 sides, then you can use Heron's Formula
to calculate the area of the triangle.[Look it up in your Textbook]
Area: T = 10.275
Perimeter: p = 16.573
Semiperimeter: s = 8.286