The granite ball

What is the weight of a granite ball with a radius of 60 cm if 1 m3 of granite weighs 2.7 tons?

Correct answer:

m =  2442.9024 kg

Step-by-step explanation:

r=60 cm m=60:100  m=0.6 m  ρ=2.7 1000=2700 kg/m3  V=34 π r3=34 3.1416 0.630.9048 m3  m=ρ V=2700 0.9048=2442.9024 kg

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