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harga = 14 000/liter x (22/7. 17,5². 40) cm³ =
14 000/liter x 38500 cm³ =
14 000/liter x 38,5 liter = 539 000
Diameter = 35 cm
Jari2 = 35/2 = 17.5cm
Tinggi = 40cm
phi = 3.14
Volume tabung = π r2 t
= 3.14 * (17.5)² * 40
= 38465cm³
1 liter = 1000 cm³
Jdi jumlah minyak dalam drum = 38465/1000
= 38,465 liter
Harganya = 14000 * 38,465 = Rp 538510