Answer:Area Δ = 102.3 units² ⇒ The answer is (d)Step-by-step explanation:* Use the formula of the area:∵ Area of the triangle = 1/2 (a)(b) sin(C)∵ We have the length of the 3 sides∴ Use cos Rule to find the angle C∵ cos(C) = (a² + b² - c²)/2ab∵ a = 25 , b = 13 , c = 17∴ cos(C) = (25² + 13² - 17²)/2(25)(13) = 625 + 169 - 289/650 = 505/650∴ m∠C = 39°∴ Area Δ = (1/2)(25)(13)sin(39) = 102.3 units²∴ The answer is (d)