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What is the mass of a …

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What is the mass of a metal sphere of radius 3.0cm,if its density is 7.0g/cm3 ? Express your answer in kg too.

Posted by Pranav Prabhakar 5 years, 5 months ago

CBSE > Class 07 > Mathematics

1 answers

Gaurav Seth 5 years, 5 months ago

d=7g/cm^3 ; r= 3

d = m/v

m=d x v

m= d x 4÷3πr^3

m= 7 x 4/3 x 22/7 x 3 x 3 x 3

m= 4 x 22 x 9 = 792 g

m= 0.792 kg

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