yg pinter mtk, tolong bagi ilmunya dong Hitunglah keliling dan luas gabungan bangun datar berikut

d1 = 2 × 18 = 36 cm
d2 = 28 cm

Luas belah ketupat = 1/2 × d1 × d2
= 1/2 × (2 × 18) × 28
= 1/2 × 36 × 28
= 1/2 × 1.008
= 504 cm²

Luas trapesium = 1/2 × (a + b) × t
= 1/2 × (14 + 28) × 18
= 1/2 × 42 × 18
= 1/2 × 756
= 378 cm²

Luas gabungan = 504 + 378 = 882 cm²