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jika jari jari ling = r
tinggi prisma = t
luas alas segi 6 = 6 ( ¹/₂ r². sin 60) = 3 r². (¹/₂√3) = ³/₂√3. r²
Keliling alas = 6r
LP = 2(³/₂ √ 3 . r² ) + 6r
LP = 3√3 r² + 6r