mohon bantuannya trims

L = ½ × a × t
165 = ½ × 22 × t
165 = 11 t
t = 165 ÷ 11
t = 15 cm (D)

Luas ▲
165 = ½ x alas x t
165 = ½ x 22 x t
165 = 11t
t = 165 ÷ 11
t = 15cm ....... (D)

Maaf kalau benar ya kak...
Let's math every^DAMN^day!
[DAMNATION]™