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Verified answer
Bangun ruang tabungd = 8,4 dm
r = 4,2 dm
t = 12 dm
π = 22/7
n = 3 drum
V = 3 × πr²t
V = 3 × 22/7 × 4,2 × 4,2 × 12
V = 1.995,84 dm³
V = 1.995,84 liter
Harga minyak tanah Rp6.000,00 per liter
= 1.955,84 × Rp6.000,00
= Rp11.975.040,00
Jadi harga minyak tanah untuk 3 drum adalah Rp11.975.040,00
d=8,4dm
r=4,2dm
t=12dm
22/7 n=3drum
v=3×22/7×4,2×4,2×12
v=1995,84dm
v=1995,84liter
harga minyak =6000/liter
=1995,84×6000=11.995.500,00