Jawabanmu

2014-08-29T14:20:39+07:00
V = 1/3 . π . r . r . t
V = 1/3 . 3,14 . 5 cm . 5 cm . 18 cm
V = 471 cm³
1 5 1
2014-08-29T14:21:03+07:00
V = Luas alas × tinggi ÷ 3
   = (3,14 × 5²) × 18 ÷ 3
   = 78,5 × 18 ÷ 3
   = 471
diameter alas10 dijadikan jari - jari = 5( 10 : 2), rumus Volume = phi x r x r x tinggi, 1/3 x 314/100 x 5 x 5 x 18 = 314/100 x 5 x 30( 18 : 3= 6= 6 x 5 = 30), = 314/10 x 15(5 x 3 = 15), = 4710/10 = 471 cm pangkat 3