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360
luas juring = 60 × 22 × 14²
360 7
luas juring = 6 × 616
= 3696 cm
Lsegitiga= √s×(s-a)×(s-b)×(s-c)
s= a+b+c
2
s= 14+14+14
2
= 35 cm
Lsegitiga=√35×(35-14)×(35-14)×(35-14)
=√231
=569,32
Ltembereng = Ljuring-Lsegitiga
= 3696 - 569,32
= 3126,68 cm
sorry kalau salah, dalam masa pembelajaran