how many cube of side a/2 unit obtained by cutting a cube of side a unit
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Step-by-step explanation:
Total surface area of the cube =6a2=6×12=6 sq. units.
DB=AD2+AB2=1+1=2
Surface area of the section DBFH=DB×BF
=2×1 =2 sq. units.
∴ Total surface area of one part =26+2 =(3+2) sq. units.

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