keliling = 20+16+14+14+14
keliling = 36 + 14(3)
keliling = 42+36
keliling = 78 cm
keliling =
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keliling = 20+16+14+14+14
keliling = 36 + 14(3)
keliling = 42+36
keliling = 78 cm
keliling =
=20 + 14 +14 +14 + 16
=78 cm