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Panjang BC = AD = 10 cm
Pakai phytagoras ketemu DE = 8 cm
Luas Jajar Genjang
= DE x AB
= 8 x 5
= 40 cm²
B.
AF adalah garis tinggi Jajar Genjang dengan alas AD
maka
Luas = AF x AD
40 cm² = AF x 10 cm
AF = 4 cm
Semoga membantu :)