Jika luas trapesium siku-siku ABED adalah 300 cm², luas trapesium ABCD adalah......cm²

Luas Trapesium ABED = 1/2 x (24+16) x t
300 = 1/2 x (40) x t
300x2 = 40t
600 = 40t
15 = t


misal
CE = x
x*2 = 25*2 - 15*2
x*2 = 625 - 225
x*2 = 400
x = √400
x = 20 cm

Luas trapesium ABCD = 1/2 ( a + b ) x t
= 1/2 (16+20+24) x 15
= 1/2 (60) x 15
= 1/2 x 900
= 450cm*2
Jawaban = b.450cm*2