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t.segitiga = akar dr 4²-2²
= akar dr 16-4
= √12
= √4.3
= 2√3 cm
a) L alas = 1/2.a.t
= 1/2.4.2√3
= 4√3 cm²
b) V prisma = L alas . t
= 4√3 . 6
= 24√3 cm kubik