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Verified answer
Sisi segitiga:a = 5 cm, b = 6 cm, c = 7 cm
s = (a + b + c) ÷ 2
s = (5 + 6 + 7) ÷ 2
s = 18 ÷ 2
s = 9 cm
Luas =
=
=
=
= 6√6 cm
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