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The glass paperweight has the face of a sphere with a radius of 4 cm. Estimate and then calculate its weight. The density of glass is approximately 3800 kg/m3.

Correct answer:

m =  1.0187 kg

Step-by-step explanation:

r=4 cm m=4:100  m=0.04 m h=3800 kg/m3  V=34 π r3=34 3.1416 0.0430.0003 m3  m=h V=3800 0.0003=1.0187 kg

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