Answer:
The answer to your question is b = 42
Explanation:
Data
hypotenuse = 70
leg 1 = 56
Process
1.- To solve this problem use the Pythagorean theorem.
c² = a² + b²
c = hypotenuse
a = 56
b = x
2.- Solve for b
b² = c² - a²
3.- Substitution
b² = 70² - 56²
4.- Simplification
b² = 4900 - 3136
b² = 1764
5.- Result
b = 42