Find the length of side a.
O A. 2
O B. 3
O c. 9
OD. 134
SUBMIT

Answer:
Answer B is correct.
Step-by-step explanation:
a² + b² = c² |-b²
a² = c² - b²
a² = 5² - 4²
a² = 25 - 16
a² = 9
a = 3