A cubical cardboard box, of side 8 cm, is made. Find
coloured paper required to cover the box. If 1 cm of the
costs 3, find the cost of the paper required to cover the box
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We have,Side of cubical cardboard of side 8cm. coloured paper required to cover the box from outside.
Surface area of cube = 6a²
= 6×(8)²
= 6×64
=396.
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