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ditanya : a. L alas dan b V kerucut
Jawab : a. L alas =
b. V kerucut =
= 3,14.50.50
= 7850 cm2
V = 1/3 phi.r2.t
= 1/3.3,14.50.50.90
= 235.500 cm3.
-Maaf ya kalau salah