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2014-05-18T20:04:43+03:00
A. ρ=m/V⇒V=m/ρ=975/7.8=125 cm³
V=l³⇒l=∛V=∛125 cm
b, m=121 kg=12100 g
V=12100/7.8=1551.2 cm³⇒l=∛1551.2 cm³
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