Pliss tolongin no.28 pake jalan ya besok mau dikumpul

Trapesium ABCD

AF = EB = (27 - 15)/2 = 12/2 = 6 cm

Luas trape = 168 cm²
(AB + CD)/2 × CE = 168
(27 + 15) × CE = 2 × 168
CE = 336/42
CE = 8 cm

DF = CE

AD = √(AF² + DF²)
AD = √(6² + 8²)
AD = √100
AD = 10 cm