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2(28+4)
2 x 32=64
hanya itu yang ku tahu
p=Panjang
l= Lebar = p-4
K = 2(p+l)
p+l = 28/2
p+l=14
p+(p-4) = 14
2p = 14+4
p=18/2
p=9 cm
l=9-4=5 cm
Luas = pl = 9×5=45 cm²