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volume = luas alas x TP
= ( jumlah sisi sejajar) / 2 x t x T
2964 = (14 + 24)/2 x 12 x TP
2964 = 228 TP
TP = 13
mencari sisi miring trapesium
alas segitiga :(24 - 14) / 2 = 5
tinggi segitiga = tinggi trapesium = 12
sisi miring trapesium = = 13
luas permukaan prisma =( 2 x luas alas )+ (keliling x TP )
= (2 ( 14 + 24)/2 x 12 ) + ( 13 + 14 + 13 + 24) x 13)
= 456 + 832
= 1288