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BD= 3,0 cm
Dit : a. Panjang AB
b. Luas ABCD (PERSEGI PANJANG)
JAWAB : a). Panjang AB= √3,0 pangkat 2 - 1,8 pangkat 2 (rumus garis miring) = √9 - 3,24 = √5,76 = 2,4 cm
b). Luas Abcd = p x l
= 2,4 x 1,8 = 4,32 cm persegi (pangkat 2)