Final Answer: 82.2
formula used: a² + b² = c²
a = 66
b = 49
c = x
Solution:
66² + 49² = x² (note: 66² = 66 × 66 = 4,356 and 49² = 49 × 49 = 2,401)
4,356 + 2,401 = x²
=
82.201 = x
rounded to the nearest tenth: 82.2
hope this helps, let me know if its incorrect or not
have a great day ;)