1.keliling persegi panajng= 2(p+l)
= 2(18+12)
= 2x30=60cm
luas = pxl
18x12= 316 cm²
maaf baru dot no 1
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1.keliling persegi panajng= 2(p+l)
= 2(18+12)
= 2x30=60cm
luas = pxl
18x12= 316 cm²
maaf baru dot no 1