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10² = r² + 8²
100= r² + 64
r² = 36
r = 6
V=1/3 x π x r² x t
= 1/3 x 3,14 x 6 x 6 x 8
= 3,14 x 2 x 6 x 8
= 301,44 cm³
= 10^2 - 8^2
=100 - 64
= 36= 6 cm
V.kerucut= 1/3 x phi x r^2 x t
= 1/3 x 3,14 x 6^2 x 8
= 301,44 cm3
maaf kalo jawabannya salah