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676 - 100 = = 24(tinggi kerucut)
3,14x10x10x8 = 2512
= 26² - 10²
=676 - 100
= 576
tinggi kerucut = √576
= 24 cm
v kerucut = 1/3 x π x r² x t
= 1/3 x 3,14 x 100 x 24
=1/3 x 314 x 24
= 314 x 8
= 2512 cm³