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A closed box is 40 cm long, 50 cm wide and 60 deep. Find the area of the foil needed for covering it.

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A closed box is 40 cm long, 50 cm wide and 60 deep. Find the area of the foil needed for covering it.

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L = 40 cm, b = 50cm, h = 60 cm 

Area of the foil = T.S. A of cuboid 

= 2 (lb + bh + lh) 

= 2(40 × 50 + 50 × 60 + 60 × 40) 

= 2(7400)= 14,800 cm2

Area of the foil required 14,800 cm2

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