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yg blm ada tinggi trapesiumnya, pake pitagoras
tp =
= √225
= 15
luas permukaan prisma
=( 2x luas alas) + ( keliling x TP)
= ( 2 x (22+14)/2 x15) + ( ( 22+17+14+15) x10)
= 540 + 680
= 1220 (A)