Answer:
AC = 9
Step-by-step explanation:
We solve using Pythagoras Theorem
The formula is given as:
a² + b² = c²
Where:
AC = a = ?
AD = b= 12
DB = c = 15
Hence,
a² + 12² = 15²
a² = 15² - 12²
a² = 225 - 144
a² = 81
Square root both sides
√a² = √81
a = 9
Hence, AC = 9
