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=1/2 (4+6) 3
=1//2.10.3=15
Lpersegipanjang = p.l
=6.4 =24
NB: tinggi segitiga = 11-3-4 = 4
Lsegitiga= 1/2.a.t
=1/2.6.4 = 12
Luas seluruh = 15+24+12 = 51