X+x²=30
x²+x-30=0
(x+6)(x-5)=0
x=-6 or x=5
we know that
The measure of the interior angle is the half-summit of the arcs that comprise it and its opposite
so

therefore
the answer is
the measure of arc TU is equal to 
Answer:
Triangle area= 0.5*17*35. (Base, Height)
Tri area = 297.5