tolong jawab nomer 30

≡ penyelesaian :

r = d/2
r = 14/2
r = 7 cm

V = πr² × t
V = 22/7 × 7 × 7 × 35
V = 22 × 7 × 35
V = 5390 cm³ [ opsi. B ] [tex]~[/tex]

volume tabung
= L alas X tinggi
= 22/7 X 7 X 7 X35
=154 X 35
=5.390 cm³ (b)

maaf kalau salah