Answer:
Step-by-step explanation:
These look like congruent triangles.. and since I can't see the whole picture I'll just go with that they are
so 70 * x = 85
x = 43/35 (1.22857)
n= 43/35 something 3 ft.... I can't see the whole number
maybe it's 63 .. if so then the answer is 77.4
if not.. just plug what ever number is there into n = x * 43/35 where x is the number that matches n on the other triangle
o =43/35 * 90 = 110.57
