Jawabanmu

2013-12-08T18:34:14+07:00
V = luas alas * tinggi
v = π . r . r . t
v = 3,14 . 5cm . 5cm . t = 2355 cm3
t = 30cm
 
Luas = (2 . luas alas) + luas selimut
Luas = 2 . π . r . r + 2 . π . r . t

Luas = 2 . 3,14 . 5cm . 5cm + 2 . 3,14 . 5cm . 30cm
Luas = 157cm2 + 942cm2 = 1099cm2
1 1 1
2013-12-08T19:23:30+07:00
Vt=.r.r=
2.355 =3,14.5.5.t=2.355 =78.5.t2.355 .78\100.t