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=64
L=(p.l)+(s.s)
=(8.16)+(8.8)
=128+64
=192
luas persegi = 8 × 8 = 64 cm2
luas yang diarsir = 128 + 64 = 192 cm2
keliling persegi panjang = 2 × ( 8 + 16 ) =48 cm keliling persegi = 4 × 8 = 32 cm
keliling yang diarsir = 48 + 32 = 80 cm