The area of this triangle can be solved using the Heron's Formula which is expressed as:
Area = √p(p −a )(p −b )(p −c )
where p is half of perimeter of the triangle and a,b,c are the side lengths.
p = (25 + 25 + 48) / 2
p = 49
Area = √49(49 −25)(49−25)(49−48)
Area = 168