I need help, please help

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:

10 cm

step-by-step explanation:

if the polygon is a rectangle, then the perimeter is x+x+y+y. using the values that you gave, the perimeter is 3+3+2+2=10cm.

step-by-step explanation: