Answer:
[tex]\huge\boxed{\sf 132\ km}[/tex]
Step-by-step explanation:
Given that,
a = 33 km
c = 55 km
[tex]c^2=a^2+b^2[/tex]
(55)² = (33)² + b²
3025 = 1089 + b²
3025 - 1089 = b²
1936 = b²
44 = b
= a + b + c
= 33 + 44 + 55
[tex]\rule[225]{225}{2}[/tex]