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lebar: 6 cm
panjang: ...?
luas:...?
panjang:
=3/2 x 6
=18/2
=9 cm (panjang)
luas:
=6 x 9
=54 cm²
P = 3/2 ×6 =9 cm
luas persegi panjng = p × l = 9 ×6 =54 cm2