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Answer:
77.2
Explanation:
Density= Mass / Volume
Convert mm³ into cm³
if 10mm³ = 1cm³
then 40mm³ = 4cm³
19.3 g/cm³ = Mass / 4cm³
19.3 = Mass ÷ 4
19.3 g × 4 = Mass
77.2 g = Mass
Hence, 77.2 grams
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