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luas layang² = d¹ × d² ÷ 2 = 11 cm × 6 cm ÷ 2 = 33 cm
luas gabungan bangun layang layang dan persegi panjang = 33 cm²+32 cm² = 65 cm² A
=1/2×11×6=33cm
bangun 2=persegi panjang=panjang×tinggi
=8×4=32cm
luas bangun datar keduanya=bangun1+bangun2=33+32=65cm
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