tolong banget ya nomer 2,3,4,5 pakai cara tolong cepetan pliss cepetan

3. π x r x r x t
3, 14 x 10 x 10 x 28 =
3, 14 x 100 x 28 =
3, 14 x 2800 =
8792
5. π x r x r x t =
3, 14 x 4 x 4 x 18 =
3, 14 x 16 x 18 =
3, 14 x 288 =
904, 32 cm persegi = luas tabung
2500 - 904, 32 = 1595, 68 cmpersegi
Sorry cuma bisa jawab 2