Soal no 6,,. Cara dan jawabannya gimana, mohon bantuannya

d jawaban nya maaf kalau salah

LAYANG-LAYANG ABCD
AC = 12 cm
BD = 3 cm
BE = 5 cm
DE = BE - BD = 5 - 3 = 2 cm
L layang-layang ABCD = L segitiga ABC - L segitiga ADC
= [1/2 × AC × BE] - [1/2 × AC × DE]
= [1/2 × 12 × 5] - [1/2 × 12 × 2]
= 30 - 12
= 18 cm^2 (C)