Perimeter is 128 altitude 48 find area

Question

Perimeter is 128 altitude 48 find area

Answer 1

If you assume this is isosceles triangle, then you can solve it , otherwise it's not solvable ( not enough information) 

set half of the base is x

the 2sqroot(x²+48²)+2x=128

sqroot(x²+48²⁾=64-x

x²+48²=64²-128x+x²

x=14

A=1/2*28*48=672