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tnggi segitiga = √ 6^2 - 3^2
= √ 36-9
= √27
= 3√3
L alas = 1/2 . alas.tinggi
= 1/2 . 6.3√3
=3.3√3
= 9√3 cm^2
V limas = 1/3 . L alas. t limas
= 1/3 . 9√3 . 10
=30√3 cm^3