a metal cube of dimension 100 cm ×100 cm ×100 cm was melted and remade into smaller cubes of 10cm × 10 cm × 10 cm dimensions . If dencity of this metal 8000 kg/cubic metre . Find 1. The total number of small cubes that can be made from the big metal cube . 2. The mass of each small metal cube
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3
Answer:
Volume of cube = Volume of the cuboid
a
3
=100×80×64
a
3
=512000
a=80 cm
Surface area = 6a
2
=38400 cm
2
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Answered by
3
Answer:
1000000cm^3 = 1m^3
1000cm^3 = 0.001m^3
1. Number of smaller cubes = Vol. of metal cube/vol. of 1 smaller cube
= 1/0.001
No. of cubes = 1000
2. mass of metal = 8000m^3
mass of small cubes = mass of metal / no. of cubes
= 8000/1000
the mass of each small metal cube = 8m^3
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