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4²+3²
16+9=√25=5
Sm:5 cm
Kliling=5+4+4+4+3=20{a}
= √4^2+3^2
= √16+ 9
= √25 = 5
Ksegitiga = jmlh semua sisi
= 3+4= 7
Kpersegi = 4×S = 4×4 = 16
jadi 16+7 =23