Tolong bantuannya sama caranya plissss no 13&14

14. di foto

15. Luas = (a + b) x t/2
54p² = (10p + 8p) x t/2
54p² x 2 = (18p) x t
108p² = 18p x t
t = 108p²/18p = 6p

#semoga membantu

13.
9^3x-1 = 243^x+1
(3^2)^3x-1 = (3^5)^x+1
3^6x-2 = 3^5x+5
6x - 2 = 5x + 5
6x - 5x = 5 + 2
x = 7


14.
luas trapesium = 1/2 × (a+b) × t
54 = 1/2 × (10+8) × t
54 = 1/2 × 18 × t
54 = 9 × t
t = 54/9
t = 6

jadi tinggi trapesium = 6p