Question

Sebuah wadah berbentuk tabung. Tinggi tabung 7 cm. diketahui volume tabung adalah 2.200 cm. tentukan diameter tabung !

Answer 1

Volume tabung = πr²t
2200 = 22/7 × r² × 7
2200 = 22 × r²
r² = 2200:22
r² = 100
r = √100
r = 10 cm

maka diameter = 20 cm

Answer 2

V = Tl r2 t


2200 = 22
-- × r2 × 7
7
2200 = 22 × r2
r2 = 2200 : 22
r2 = 100
r = v---
100
r = 10

d = r × 2 = 10×2 =20

diameter = 20