Ответ:
80%
Объяснение:
ρ=13,6 г/м ρн=17 г/м φ=?
===
φ=ρ*100%/ρн=13,6*100%/17=80%
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Ответ:
80%
Объяснение:
ρ=13,6 г/м ρн=17 г/м φ=?
===
φ=ρ*100%/ρн=13,6*100%/17=80%
================================