Jawabanmu

2014-05-01T11:40:56+07:00
3 x luas alas kerucut..
tau kan cara menghitung luas alas kerucut?
2014-05-01T11:45:19+07:00
Topi = (3,14 x 10,5 x 10,5) + (3,14 x 12 x 12) + (22/7 x 21 x 12)
 = 346,185 + 452,16 + 792
 = 1590.345

topi 3 = 3 x 1590,345
= 4771,035 cm3