Q. 74.5( 33 Votes )

# A 4 cm cube is cu

Answer :

Given,

Original edge of cube = 4 cm

Original volume of cube = 4^{3} = 64 cm^{3}

After cutting ,

Edge of cube = 1 cm

Hence volume of new cube = 1^{3} = 1 cm^{3}

Number of small cubes thus formed =

Hence , total surface area of 64 cubes = 64× 6a^{2} = 64×6 = 384 m^{2}

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