4 cubes of sides 12 cm each are joined together to form a new cube what's will be surface area of new cube?
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Answer :
Length of the resulting cuboid
=(12+12)cm
=24cm
Breadth and height remaining the same i.e. 12 cm each
Surface area =2(lb+bh+lh)
=2(24×12+12×12+24×12)cm sq.
=1440cm sq.
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