Question

Solve using pythagorean theorem! Problem in the picture!!

Answer 1

X=9
Explanation:
A^2 + B^2 = C^2
C^2 - B^2 = A^2
15^2 - 12^2 = A^2
225 - 144 = A^2
81 = A^2
Square root 81 = 9
9 =A
X=9