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rumus luas segi banyak : luas bangun 1 + luas bangun 2=
bangun 1 ( jajargenjang)
Tinggi = 4 cm
alas = 8 cm
Luas bangun 1 = T × A
= 4 cm × 8 cm
= 32 cm²
bangun 2 (layang - layang)
d1 = 3 cm
d2 = 6 cm
Luas bangun 2 = 2 ÷ d1 × d2
= 2 ÷ 3 cm × 6 cm
= 9 cm²
Luas segi banyak = L1 + L2
= 32 cm² + 9 cm²
= 41 cm²