Pyramid-shaped 15643

The regular quadrilateral pyramid-shaped casting with a base edge of 60 cm in length and 5 cm in height is made of a material density of 7.8 g / cm 3. Calculate its weight.

Correct answer:

m =  46.8 kg

Step-by-step explanation:

a=60 cm h=5 cm ρ=7.8 g/cm3  S1=a2=602=3600 V=31 S1 h=31 3600 5=6000 cm3 m1=ρ V=7.8 6000=46800 g  m=m1 kg=m1:1000  kg=46800:1000  kg=46.8 kg=5234 kg=46.8 kg

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