Jawabanmu

2014-09-11T20:10:28+07:00
Volume kerucut = 1/3 × π × r ² × t

Volume kerucut 1
V= 1/3 × 22/7 × 3,5² × 6 = 77 cm³

Volume kerucut 2
V= 1/3 × 22/7 × 7² × 6 = 308 cm³

a. Besar perubahan volume kerucut=V Kerucut 2 - V Kerucut 1
--> 308 - 77 = 231 cm²

b. Perbandingan volum3 kedua kerucut= V Kerucut 1 : V Kerucut
--> 77 : 308 = 1 : 4