Answer:
Step-by-step explanation:
Hello!
(5x+4) /( (x-4)( x+2))
(5x+4)/ (x² +2x -4x -8)=
(5x+4) /( x²-2x -8)
eqn : 9 x 9 x h = 1620
h = 1620 / 81 = 20
Answer:108
