volume bangun adalah...(phi 22/7) tolong pakai cara...

jawabannya 3080cm³
caranya ada digambar

volume tabung = phi x r x r x t = 22/7 x 7 x 7 x 12 = 1.848 cm3
volume kerucut = 1/3 x L alas x t = 1/3 x phi x r x r x t = 1/3 x 22/7 x 7 x 7 x 24 = 1.232 cm3
volume keseluruhan = 1.848cm3 + 1.232cm3 = 3.080cm3 (b)
semoga bermanfaat :)