Answer:
The answer would be 70
Step-by-step explanation:
All of the interior angles of a triangle equate to 180.
If congruent the sides are equal
15x-9=7x+11
8x=20
x=20/8=2.5
26.1533936612
bc
h= 6 square root 3
24^2+6 square root 3^2=684
square root 684=26.1533936612
b
i-
