From each face of the given cube, an unit cube (shaded) is cut out. What will be the surface area of the remaining portion of the cube (in cm2)
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Vol. of 4cm cube =(4)
3
cm
3
=64cm
3
Vol. of 1cm cube =(1)
3
cm
3
=1cm
3
Total no. of 1cm cubes =
Vol. of 1 cm cube
Vol.of 4 cm cube
=
1
64
=64
Surface area of 1 cube =6(side)
2
cm
2
Surface area of 1 cube =6(1)
2
cm
2
Surface area of 1 cube =6cm
2
Total surface area of all small cubes =64×6cm
2
=384cm
2
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