An open rectangular box is made of wood 2cm thick. If the internal dimensions of the box are 50cm long, 36cm wide and 20cm deep, the box volume of wood in the box is

11 520cm³

36 000cm³

38 200cm³

47 520cm³

Correct answer is A

Internal dimension are 50cm, 36cm and 20cm

internal volume = 50 x 36 x 20cm³

1000 x 36cm³

= 36000cm³

External dimension are 54cm x 40cm x 22cm

= 2160cm² x 22cm = 47520cm³

Volume of wood = Ext. volume - Int. volume

= 47,520cm³ - 36,000cm³

= 11,520cm³

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An open rectangular box is made of wood 2cm thick. If the internal dimensions of the box are 50cm long, 36cm wide and 20cm deep, the box volume of wood in the box is

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