asap here im very stuck in this problem its pythagorean theorem

Answer:
6ft
Step-by-step explanation:
a² + b² = c² Pythagorean Theorem
8² + b² = 10² Input numbers (a and b are always legs, c is always hypotenuse)
64 + b² = 100 Calculate squares
100 - 64 = 36 Find b²
√36 = 6 Square root to find answer