A triangle has sides of length 7, 24, and 25. What is the area of the triangle?

This is a right-angled triangle because $$7^2 + 24^2 = 49 + 576 = 625 = 25^2$$. The area of a right-angled triangle is $$\frac{1}{2} \times \text{base} \times \text{height}$$.

Ответ: $$84$$