Jawabanmu

2014-09-13T17:25:11+07:00
Masukan data2 yg diketahui di volume kerucut => 1256= 1/3. 3,14.r^2. 12
=> 3768= 37,68r^2 => r^2= 3768/37,68 = 100 => r=akar 100= 10 cm
1256 = 1/3 . 3,14 . r^2 . 12
1256 = 12,56 . r^2
r^2 = 1256/12,56-----------------r^2=100--------------r = 10