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204,1 : 3,14 = 5s
65 = 5s
65 : 5 = s
13 = s
(ii) t² = s² - r²
t² = 13² - 5²
t² = 169 - 25
t² = 144
t = √144
t = 12
(iii) 1/3 x Π x r² x t
1/3 x 3,14 x 5 x 5 x 12
3,14 x 5 x 5 x 4
3,14 x 25 x 4
3,14 x 100
314 cm³
Mudah mudahan sih bener :D