Answer:
a² + b² = c²
1. 45² + 36² = c²
2025 + 1296 = c²
3321 = c²
√3321 = √c²
57.6 = c
2. a² + 4.5² = 12.5²
a² + 20.25 = 156.25
a² + 20.25 - 20.25 = 156.25 - 20.25
a² = 136
√a² = √136
a = 11.7
Step-by-step explanation:
