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240=8x6/2.t
240:24=t
t=10
Lp. cari satu-satu
LUAS 2segitiga = 2x8x6/2=48
sisi2 alas 8,6,(10)
LUAS 3 sisi tegak
1) 8x10=80
2) 6x10=60
3) 10x10=100
Lp=48+80+60+100 =288