In triangle GHI, angle G = 25 degrees and angle H = 65 degrees. Find angle I.

A triangular park has sides 30 m, 40 m, and an angle of 90 degrees between them. Determine the area of the park using the given information.

A triangular plot of land has sides of length 50 meters and 80 meters, with an included angle of 60 degrees. Calculate the area of the triangle.