Determine whether a triangle can be formed with the given side lengths. If so, use Heron’s formula to find the area of the triangle. a = 240 b = 121 c = 263

The sum of the two short sides is longer than the long side, so these lengths will form a triangle.

Heron's formula makes use of

... s = (a + b + c) / 2 = (240 + 121 + 263) / 2 = 312

Area = √ (s (s - a) (s - b) (s - c))

... = √ (312*72*191*49)

... = √210,240,576

... ≈ 14,499.675