Hi
Please repost with more detail as to the 'type' of right triangle,
for example, is the question involving an isosoles right triangle,
where the legs are of equal length?
for ex, if that were the case:
x^2 + x^2 = 14^2
2x^2 = 196
x^2 = 98
area of this rightΔ = (1/2) x*x = (1/2)x^2 = (1/2)98 = 49